Today is the last class, but noone scribe for today( i think it's not important) but anyway, I need 1 scribe to complete my three so ^^
Today, Ms.K K handed out our test and went over it ..that it for today ..Good luck to u guys in the exam
Monday, June 16, 2008
Good Luck
Hi to all the regular scribers & those who were not so diligent:
Hope you study very hard for the upcoming exam. Remember to read those multiple choice questions very carefully before deciding upon the correct answer.
Have a great summer & much success in whatever endeavours you pursue.
Hope you study very hard for the upcoming exam. Remember to read those multiple choice questions very carefully before deciding upon the correct answer.
Have a great summer & much success in whatever endeavours you pursue.
Sunday, June 15, 2008
Friday, we had our last test. The unit was electricity. The test was on electrical circuits and inductions. There were 20 multiple choice questions and 30 marks worth of short/long answer questions (I forget which of them it was).
I wasn't too confident on this test. Who knows, maybe it turned out better than I thought. How did you guys do?
So, Monday will be our last class. Finally, it's over. Well, good luck in your futures. Have a safe grad. Lol.
I wasn't too confident on this test. Who knows, maybe it turned out better than I thought. How did you guys do?
So, Monday will be our last class. Finally, it's over. Well, good luck in your futures. Have a safe grad. Lol.
Thursday, June 12, 2008
Hey guys. Since I need one more blog to complete my three, and since somebody already blogged today even though I called it.. I will blog anyways. haha..
Here are the answers to what we corrected today in class
Chapter 37: Electromagnetic Induction TRANSFORMERS
1. 1200 V
2. 1.2 A
3. 1440 W
4. 1440 W
5. 12 A
6. up, down
7. more, less
8. voltage, energy and power
9. step-down, 20/1
10. ac, continually change
Chapter 26 REVIEW
1. 5.0 x 10 ^-4 V
2. 2.24 x 10 ^ -5 A
3. Current in downwards
6. S N --> <--N
7. 125 : 1 (secondary : primary)
8. a) 300 000 V b) 2 500 to 1
9. a) 300000 V b) 0.06 A c) 18 000 W
And that's all. Study up, test tomorrow and exam on Thursday afternoon. Goodluck!
We are freaking graduating!! =D
Here are the answers to what we corrected today in class
Chapter 37: Electromagnetic Induction TRANSFORMERS
1. 1200 V
2. 1.2 A
3. 1440 W
4. 1440 W
5. 12 A
6. up, down
7. more, less
8. voltage, energy and power
9. step-down, 20/1
10. ac, continually change
Chapter 26 REVIEW
1. 5.0 x 10 ^-4 V
2. 2.24 x 10 ^ -5 A
3. Current in downwards
6. S N --> <--N
7. 125 : 1 (secondary : primary)
8. a) 300 000 V b) 2 500 to 1
9. a) 300000 V b) 0.06 A c) 18 000 W
And that's all. Study up, test tomorrow and exam on Thursday afternoon. Goodluck!
We are freaking graduating!! =D
Wednesday, June 11, 2008
Hi guys!
Today in class we started off by correcting the back part of the chapter 25 study guide.
Then we picked up some worksheets and read the notes on Lenz's Law. Then did a little worksheet on Lenz's Law.
Then we picked up some more worksheets on electromagnetic Induction, and chapter 26 review.
And then we all did our work peacefully.
that's all for today!
Today in class we started off by correcting the back part of the chapter 25 study guide.
Then we picked up some worksheets and read the notes on Lenz's Law. Then did a little worksheet on Lenz's Law.
Then we picked up some more worksheets on electromagnetic Induction, and chapter 26 review.
And then we all did our work peacefully.
that's all for today!
Tuesday, June 10, 2008
Electromagnetic Induction
Today in class we worked on the Chapter 37: Electromagnetic Induction (37-1) sheet as well as Grade 12 Physics Worksheet: Electromagnetic Induction. There was also an information sheet we went over on Induced EMF and Factors Affecting Induced EMF. For wednesday, make sure you know how electromagnetic induction works and understand the 2 formulas to find it.
Next scribe is Elizabeth.
Monday, June 9, 2008
Monday, June 9, 2008
Hey classmates this is AznFlame and I'm your scribe for today. Well today in class we got our Electric & Magnetic Fields and Exploration of Space & Low Earth Orbit tests handed back to us, we also went over the answers. We also had to do the chapter 25 study guide we got on Friday.
Next scribe is Evan
Next scribe is Evan
Friday, June 6, 2008
Thursday, June 5, 2008
June 4, 2008
Since no one wants to scribe, I'll do it.
So today in class Ms. K went over the answers of the chapter 23 Study Guide concerning circuits. Then after that she went over another work sheet which is chapter 34 and 35. Here are the answers for those who were not in class.
Chapter 34-1:
1. a)Volts
b)voltage
c)current;amperes
2. a) 1
b) 15
c) 1
d) narrow pipe; thin wire
Chapter 34-2
1. 1.5x10^-3 A
2. 4A
3. 1.2A
4. 4A
5. initial: 1.5x10^-5 and after: 3x10^-5
6. 1000 ohms
7. 10 ohms
8. 100 V
9. 240 ohms to 50 ohms; yes it change
Chapter 35-1
1. 3A
2. 6 ohms; 1A
3. 12 ohms
4. a) B
b) A
c) 4,6
d) 5
e) 4,6
f) B
g) B
Chapter 35-2
1. a) 3A
b) 6A
2. D
3. a) 6V
b)
c) 12A
d) 0.5 ohms
And thats about it for chapters 34 and 35. Then she gave us notes about Series and Parallel Circuits. Then after that she gave us another paper to work on which we are going over the answers tomorrow. So don't forget to do the homework and be ready tomorrow. Good luck.
So today in class Ms. K went over the answers of the chapter 23 Study Guide concerning circuits. Then after that she went over another work sheet which is chapter 34 and 35. Here are the answers for those who were not in class.
Chapter 34-1:
1. a)Volts
b)voltage
c)current;amperes
2. a) 1
b) 15
c) 1
d) narrow pipe; thin wire
Chapter 34-2
1. 1.5x10^-3 A
2. 4A
3. 1.2A
4. 4A
5. initial: 1.5x10^-5 and after: 3x10^-5
6. 1000 ohms
7. 10 ohms
8. 100 V
9. 240 ohms to 50 ohms; yes it change
Chapter 35-1
1. 3A
2. 6 ohms; 1A
3. 12 ohms
4. a) B
b) A
c) 4,6
d) 5
e) 4,6
f) B
g) B
Chapter 35-2
1. a) 3A
b) 6A
2. D
3. a) 6V
b)
c) 12A
d) 0.5 ohms
And thats about it for chapters 34 and 35. Then she gave us notes about Series and Parallel Circuits. Then after that she gave us another paper to work on which we are going over the answers tomorrow. So don't forget to do the homework and be ready tomorrow. Good luck.
Thursday, May 29, 2008
Test Day!
Ok today in class we had a test regarding electric and magnetic fields. Ms. Kozoriz wasn't there so Mr. Rahman took over again to substitute. The test went smoothly until the bell rang.
And thats all i think we did in class. So pray for your grades and hope we all did well. Good luck.
And thats all i think we did in class. So pray for your grades and hope we all did well. Good luck.
Wednesday, May 28, 2008
Wednesday May 28th
Alright, since no ones posted a scribe for today, I'll do it mmk?
Alrighty, not to much done today. If you were in class on tuesday you should have gotten a couple more worksheets/handouts. It was mostly on these that we worked. HOWEVER. That isn't all we worked on. We also finished the last few questions on the Moving Charges worksheet, which we didn't do yesterday.
Even still that stuff wasnt the most important of everything. We also reviewed for the test which we're going to be writing tomorrow. Many (and by many I basically mean all) of the things you need to know for the test tomorrow are on the slides, which should be below this post.
Overall I think thats about everything we did. Study up guys, and good luck on the test! :)
Alrighty, not to much done today. If you were in class on tuesday you should have gotten a couple more worksheets/handouts. It was mostly on these that we worked. HOWEVER. That isn't all we worked on. We also finished the last few questions on the Moving Charges worksheet, which we didn't do yesterday.
Even still that stuff wasnt the most important of everything. We also reviewed for the test which we're going to be writing tomorrow. Many (and by many I basically mean all) of the things you need to know for the test tomorrow are on the slides, which should be below this post.
Overall I think thats about everything we did. Study up guys, and good luck on the test! :)
Tuesday, May 27, 2008
Hello. Sorry it's late. I was looking through my binder and I remembered I wanted to be the scribe for today, so here I am.
We corrected
Physics 40S Electric and Magnetic Fields Assignment
The Physics of a Cathode Ray Tube
And here are the answers:
a. PE = QE
= (1.6 x 10-19)(20 000)
= 3.2 x 10-15 J
b. Ep = Ek
Ek = 3.2 x 10-15 J
c. KE = PE
KE = ½mv22(3.2 x 10-15)
= 9.11 x 10-31 V6.4 x 10-15 = 9.11 x 10-3 1V
8.38 x 10 7m/s = V
d. T = d/v= 0.02 8.38 x 107
= 2.39 x 10-10 s
e. E = v/d
= 500 0.01
= 500 000 m
f. a = Eq/m = (500 000)(-1.6 x 10-19) 9.11 x 10-19 kg
= -8.78 x 1016 m/s2
g. V2 = V1 + at = 0 + (8.78 X 1016)(2.39 x 10 -10)
= 2.1 x 107 m/s
h. d = 1/2 at2 = ½ (8.78 x 1016)(2.39 x 10-10)
= 2.5 x 10 -3 m
We also took some notes
Cathode Ray Tube
· electrons leave the cathode and accelerate towards the anode
· the electric field, E, alone produces a force on the electrons Fe = qE causing the elections to deflect up to x
· the magnetic field, B, alone produces a force of electrons, Fb = Bqv causing the electrons to deflect down to y
1. The Find Speed V, of electrons adjust B and E until electrons hit point z
FB = Fc
Bqv = qE
V = E/B
2. To find `m` turn off E. B will deflect electrons to y where
FB = FC
Bqv/R = mv2/BqR
3. To find charge/ratio q/m = v/BR or V = E/B
Sorry if it turned out all weird. My computer's weird, I tried. I'm weird. Okay bye.
Monday, May 26, 2008
Wednesday, May 21, 2008
i need a new computer
dang.. i hate my computer..
but.. here's my pt of view, of wat we did 2day
we pretty much started off the class w/ doing our lab. i was confused w/ wat 2 do @ 1st but hopefully ended up being partly right
the lab was fr. pg 430, i believe, fr our textbooks, & consisted of taping pennies 2 a ruler @ certain pts. Ms. K. gave us a lab worksheet 2 b handed in. Pretty sure that was all we did 2day..
next scribe...
Kevin (either one =) )
but.. here's my pt of view, of wat we did 2day
we pretty much started off the class w/ doing our lab. i was confused w/ wat 2 do @ 1st but hopefully ended up being partly right
the lab was fr. pg 430, i believe, fr our textbooks, & consisted of taping pennies 2 a ruler @ certain pts. Ms. K. gave us a lab worksheet 2 b handed in. Pretty sure that was all we did 2day..
next scribe...
Kevin (either one =) )
Tuesday, May 20, 2008
THE DAY AFTER...The Long Weekend
The class stared off with a short little review of the past three classes that the few who went to Moose Jaw had missed. Ms. K went over Coulomb’s Law which is basically a formula to find the electric force:
Fe = k q1 q2 / R2
(k is the only constant in this formula with is 9 x 109)
Then she also reviewed Electric Fields:
for a test charge the formula is... E = Fe / q
for a point charge the formula is... E = kQ / R2
Ms. K also reviewed some things from grade 11 on electric fields vectors and what happens to the horizontal components when you have two or more positive charges, negative charges , a positive and negative charge and also changed plates. I don’t own Adobe Photoshop so I can’t really illustrate the diagrams, but we have plenty of notes on it anyway.
After our “spectacular” review we got a new booklet called Gravitational Potential Energy which we went over in class, it shouldn’t be anything new to anyone because and Potential/Kinetic concept is the same as from past units, there’s just a different way of calculating it because we are using Electric fields. The main thing to not forget because we will be using it numerous times is the formula:
1 joules / 1 coulombs = 1 Volt
Things to look over and study from the booklet:
Electric Potential energy – scalar, joules, just energy
Electric Potential – energy / charge, scalar, joules / coulombs or VOLTs
Potential Difference – Change in potential from point 1 to another point
After that we did the Concept – Development Practice Page, and then started the Electric Potential Worksheet. And that’s the end of our class on THE DAY AFTER…the long weekend
Fe = k q1 q2 / R2
(k is the only constant in this formula with is 9 x 109)
Then she also reviewed Electric Fields:
for a test charge the formula is... E = Fe / q
for a point charge the formula is... E = kQ / R2
Ms. K also reviewed some things from grade 11 on electric fields vectors and what happens to the horizontal components when you have two or more positive charges, negative charges , a positive and negative charge and also changed plates. I don’t own Adobe Photoshop so I can’t really illustrate the diagrams, but we have plenty of notes on it anyway.
After our “spectacular” review we got a new booklet called Gravitational Potential Energy which we went over in class, it shouldn’t be anything new to anyone because and Potential/Kinetic concept is the same as from past units, there’s just a different way of calculating it because we are using Electric fields. The main thing to not forget because we will be using it numerous times is the formula:
1 joules / 1 coulombs = 1 Volt
Things to look over and study from the booklet:
Electric Potential energy – scalar, joules, just energy
Electric Potential – energy / charge, scalar, joules / coulombs or VOLTs
Potential Difference – Change in potential from point 1 to another point
After that we did the Concept – Development Practice Page, and then started the Electric Potential Worksheet. And that’s the end of our class on THE DAY AFTER…the long weekend
Friday, May 16, 2008
Thursday, May 15, 2008
Thursday, May 15, 2008
Hey guys this is AznFlame and I'm the scribe for today. Well today in class we went over the Electric and Magnetic Fields handout that Ms.K gave us, we also were handed another hand out called Coulomb's Law in One Dimension we also did some problems from the green book can't remember which page though.Well that's all we did in class basically.
Next scribe will be Evan
Next scribe will be Evan
Monday, May 12, 2008
the day before the test (space exploration)
hey everyone! =) aebe here...
and this is what we did today.
first, we went over the problems on page 172 ( #'s 17,20,21,22,27) and here are the answers:
17. 1.989 × 10^30 kg
20. a. 3070.5 m/s
b. 86400s -> 8.66 × 10^4s or 24 hrs
21. a. 7348.469 s
b. 1508 m/s
22. a. 0.18676 m/s
b. 15.87 N
27. a. 2.03 × 10^20 N
b. 2.62 × 10^-3 N/kg
after doing the problems, ms. k went over the hand out GRADE 12 PHYSICS: GRAVITY AND APPARENT WEIGHT. then we had the review for the test tomorrow. the class ended of with ms. k showing us a video (i forgot the title.. sorry).
oh yeah... it wasn't shown in the slides... but i think ms. k said to read/study/review micro-gravity, hazzards, space exploration and why is the satellite stay in orbit.
that's all for tonight. =)
good luck for tomorrow's test! =)
next scribe.... kevin.
and this is what we did today.
first, we went over the problems on page 172 ( #'s 17,20,21,22,27) and here are the answers:
17. 1.989 × 10^30 kg
20. a. 3070.5 m/s
b. 86400s -> 8.66 × 10^4s or 24 hrs
21. a. 7348.469 s
b. 1508 m/s
22. a. 0.18676 m/s
b. 15.87 N
27. a. 2.03 × 10^20 N
b. 2.62 × 10^-3 N/kg
after doing the problems, ms. k went over the hand out GRADE 12 PHYSICS: GRAVITY AND APPARENT WEIGHT. then we had the review for the test tomorrow. the class ended of with ms. k showing us a video (i forgot the title.. sorry).
oh yeah... it wasn't shown in the slides... but i think ms. k said to read/study/review micro-gravity, hazzards, space exploration and why is the satellite stay in orbit.
that's all for tonight. =)
good luck for tomorrow's test! =)
next scribe.... kevin.
Friday, May 9, 2008
TGIF
Wow I thought the week would NEVER finish. But it's Friday now! :D and I almost forgot that I was scribe. ^_^"
So in today's class we went over a lot of problems/worksheets. For most of the worksheets Ms. K wrote the answers on the smartboard and posted it up below this scribe post.
We also went over the green textbook questions on the white board. I didn't get all the answers down.. I apologize.
But for number 6, 7 and 13 you use the F=Gm1m2/R² formula
Number 18 you use m=4Ï€²R³/GT²
Answers that I do have;
#7: 4.17 x 10²³ N
#13: m1 = 0.37kg, m2 = 0.74 kg
#18: 5.65 x 1026 kg
She then assigned more problems for us to do from the same page (172), numbers 17, 20, 21, 22 and 27 in the green textbook.
We then watched Febi and Elizabeth's Hubble Telescope presentation, nice.
And that was the end of class!
Next scribe is aebe :)
So in today's class we went over a lot of problems/worksheets. For most of the worksheets Ms. K wrote the answers on the smartboard and posted it up below this scribe post.
We also went over the green textbook questions on the white board. I didn't get all the answers down.. I apologize.
But for number 6, 7 and 13 you use the F=Gm1m2/R² formula
Number 18 you use m=4Ï€²R³/GT²
Answers that I do have;
#7: 4.17 x 10²³ N
#13: m1 = 0.37kg, m2 = 0.74 kg
#18: 5.65 x 1026 kg
She then assigned more problems for us to do from the same page (172), numbers 17, 20, 21, 22 and 27 in the green textbook.
We then watched Febi and Elizabeth's Hubble Telescope presentation, nice.
And that was the end of class!
Next scribe is aebe :)
Thursday, May 8, 2008
Satellite Motion
The class started off watching Mr. Same Same guy talking about Satellite motion. We were told to write 5 points while watching. Then we picked 3 sheets, The Falling Moon, Artificial Satellite, and Satellite Motion. I guess that’s it for today. Next scribe for tomorrow will be Jadanet as she requested ^_^.
Wednesday, May 7, 2008
Space Exploration
Hello everyone and I am your scribe for today! Andrew and Tang started off the class by presenting their project about Disaster of Space Exploration. Followed by Hanzel with his Space Exploration project. Then we had a short break and Ms. K gave us a sheet called Physical Gravity and Apparent Weight. We also went over the questions in Chapter 8 review sheet.
Here are the answers:
After going over the answers, presentations were continued, Kevin presented his project about the Exploration of Mars. Then Ms. K ended the class by discussing the Mass of a Central Object and Radius of Motion o a Satellite.
This is the derivation of the formulae:
Substitute V:
Escape Velocity Derivation:
I guess that’s all we did today. Good night to everyone. Next scribe for tomorrow will still be . :P
Here are the answers:
After going over the answers, presentations were continued, Kevin presented his project about the Exploration of Mars. Then Ms. K ended the class by discussing the Mass of a Central Object and Radius of Motion o a Satellite.
This is the derivation of the formulae:
Substitute V:
Escape Velocity Derivation:
I guess that’s all we did today. Good night to everyone. Next scribe for tomorrow will still be . :P
2 days scribe
05-06-08
Ms. K was back and we continued the presentations. Thanks to Jordan's laptop for the presentation. There are still few people who didn't present yet so i guess some of our time on wed will be spend for presentations again. There's only two presentations for today so for the rest of our class time, we went over the solutions for Gravitational fields worksheet.
05-05-08
Monday's class, Ms. K was away and Mr Harrison was the sub for her. At first, we just went over the answers for the universal law of gravitation sheet and here's the answer:
the rest of our class time was spent to answer problems from the green book p.172 # 6, 7, 11, 13, 18 or the review chapter8 but don't do #s 4 & 7
Ms. K was back and we continued the presentations. Thanks to Jordan's laptop for the presentation. There are still few people who didn't present yet so i guess some of our time on wed will be spend for presentations again. There's only two presentations for today so for the rest of our class time, we went over the solutions for Gravitational fields worksheet.
05-05-08
Monday's class, Ms. K was away and Mr Harrison was the sub for her. At first, we just went over the answers for the universal law of gravitation sheet and here's the answer:
- FG= 7.41 x 10^-12N
- a. m= 72.7kg
b. FG= 712.3N
c. Fw= 159.9 lb - a. double
b. 1/4 F
c. 4F
d. 16F - Gmoon= 1.62 m/s^2
the rest of our class time was spent to answer problems from the green book p.172 # 6, 7, 11, 13, 18 or the review chapter8 but don't do #s 4 & 7
i noticed that when no one was called to do the scribing, no one is really doing it. So I choose xxcoolguyxx to do the scribe for wed's class=)
Wednesday, April 30, 2008
The Scribe
So, for this physics class on this lovely, beautiful...Wednesday, We had a substitute teacher (and I know it’s not the Ukrainian Easter), anyhow I believe his name was Mr. “B” and he claimed to know about physics and he sure sounded like it. First, we went over the Gravitational Potential Energy Questions that not many people managed to accomplish Tuesday night. I will not type out every step so people can learn them for there selves, but I will give the answers so the people who weren’t here today, (when I say everyone, I clearly mean Kevin).
So here are the answers:
1. 3.13 x 10 ^ 10 joules
2. -2.36 x 10 ^ 9 joules
3. 2.89 x 10 ^10 joules
4. 2.36 x 10 ^ 9 joules
5. 1.18 x 10 ^ 11 joules
After we finished off with the worksheet, we were showered with a thousand more... a booklet titled 14.5 Escape Speed, and two others with a number of questions called Universal Law of gravity and Gravitational Field’s worksheet. So I’m assuming that we are supposed to have those done for like Thursday and Friday BECAUSE OUR PRESENTATIONS ARE DUE:
NEEEXXXXXTTTTT WEEEEEEKK!!!!! haha
So here are the answers:
1. 3.13 x 10 ^ 10 joules
2. -2.36 x 10 ^ 9 joules
3. 2.89 x 10 ^10 joules
4. 2.36 x 10 ^ 9 joules
5. 1.18 x 10 ^ 11 joules
After we finished off with the worksheet, we were showered with a thousand more... a booklet titled 14.5 Escape Speed, and two others with a number of questions called Universal Law of gravity and Gravitational Field’s worksheet. So I’m assuming that we are supposed to have those done for like Thursday and Friday BECAUSE OUR PRESENTATIONS ARE DUE:
NEEEXXXXXTTTTT WEEEEEEKK!!!!! haha
Tuesday, April 29, 2008
GRAVITATIONAL POTENTIAL ENERGY
Hi everyone, its Elizabeth
Today, we had a lesson about gravitational potential energy. We did a transparency worksheet. Ms k gave us a work sheet for the rest of the class, that's about it. Just so you know, we're about half way through Exploration of Space.
Night!
Today, we had a lesson about gravitational potential energy. We did a transparency worksheet. Ms k gave us a work sheet for the rest of the class, that's about it. Just so you know, we're about half way through Exploration of Space.
Night!
Sunday, April 27, 2008
friday-april 25, 2008
ooohhh... nobody posted anything for last friday... sooo.. here goes. =)
friday-april 25, 2008
sub- mr. babisky
we went over the other side of the study guide- 8.2 USING THE LAW OF UNIVERSAL GRAVITATION
here are the answers
MOTION OF PLANETS AND SATELLITES
1. parabolic
2. vertical
3. horizontal
4. horizontal
5. Earth
6. orbit
7. uniform circular motion
WEIGHT AND WEIGHTLESSNESS
1. acceleration
2. inverse
3. 2nd
4. decreases
5. freefall
6. upward
7. weightless
THE GRAVITATIONAL FIELD
1. gravitational field
2. gravity
3. inversely
4. square
EINSTEIN'S THEORY OF GRAVITY
1. force
2. space
3. curved
4. accelerated
5. relatively
6. sun
7. blackhole
8. mass
** after going over the study guide he gave us a little time to finish up the sheets- CHAPTER 11: GRAVITATIONAL INTERACTIONS and INVERSE-SQUARE LAW. after 20 mins or so, we went over these sheets.
here are the answers
CHAPTER 11: GRAVITATIONAL INTERACTIONS
1. 4F
2. 4F
3. 16F
4. stays the same
5. 2/9F
6. stays the same
INVERSE-SQUARE LAW
1. 9 area units - 1/9 mm thick
16 area units - 1/16 mm thick
2. 25 meter squared
100 meter squared
**after the sheets he gave us an assignment--- page 160 practice problems 1-4 and page 172 problems 1-5 (from the green book) for the remaining time we had.
i guess that's what we did last friday... =)
friday-april 25, 2008
sub- mr. babisky
we went over the other side of the study guide- 8.2 USING THE LAW OF UNIVERSAL GRAVITATION
here are the answers
MOTION OF PLANETS AND SATELLITES
1. parabolic
2. vertical
3. horizontal
4. horizontal
5. Earth
6. orbit
7. uniform circular motion
WEIGHT AND WEIGHTLESSNESS
1. acceleration
2. inverse
3. 2nd
4. decreases
5. freefall
6. upward
7. weightless
THE GRAVITATIONAL FIELD
1. gravitational field
2. gravity
3. inversely
4. square
EINSTEIN'S THEORY OF GRAVITY
1. force
2. space
3. curved
4. accelerated
5. relatively
6. sun
7. blackhole
8. mass
** after going over the study guide he gave us a little time to finish up the sheets- CHAPTER 11: GRAVITATIONAL INTERACTIONS and INVERSE-SQUARE LAW. after 20 mins or so, we went over these sheets.
here are the answers
CHAPTER 11: GRAVITATIONAL INTERACTIONS
1. 4F
2. 4F
3. 16F
4. stays the same
5. 2/9F
6. stays the same
INVERSE-SQUARE LAW
1. 9 area units - 1/9 mm thick
16 area units - 1/16 mm thick
2. 25 meter squared
100 meter squared
**after the sheets he gave us an assignment--- page 160 practice problems 1-4 and page 172 problems 1-5 (from the green book) for the remaining time we had.
i guess that's what we did last friday... =)
Wednesday, April 23, 2008
Scribe Post #3
Well since there looks like there has been a slump in the scribing over the last couple of days I think this is a good time to finish up my last scribe post.
Today in class we started off by getting back our Circular Motion & Work and Energy tests. We then went over the answers with Mrs. K and made sure we had the correct answers.
We then moved onto watching a video. The name of it was "Kepler's Three Laws." After watching that and answering the question sheet, we went over the correct answers for that.
"Kepler's Three Laws."
1. Each planets path is an ellipse and each planet moves around the sun which is called the focus.
2. The imaginary line from the sun to a planet sweaps out equal areas in equal time intervals. Planets move faster when closer to the sun and slower when farthest from the sun.
3. The ratio of the squares of the periods of any two planets revolving about the sun is equal to the ratio of the cubes of their average distances from the sun.
The video took the greater part of the class and we were left with about 20 minutes to finish up Study Guide 8. Also those who missed the lab yesterday were given time to finish that up.
That was it for today and i'll see you guys all back in class tomorrow.
Today in class we started off by getting back our Circular Motion & Work and Energy tests. We then went over the answers with Mrs. K and made sure we had the correct answers.
We then moved onto watching a video. The name of it was "Kepler's Three Laws." After watching that and answering the question sheet, we went over the correct answers for that.
"Kepler's Three Laws."
1. Each planets path is an ellipse and each planet moves around the sun which is called the focus.
2. The imaginary line from the sun to a planet sweaps out equal areas in equal time intervals. Planets move faster when closer to the sun and slower when farthest from the sun.
3. The ratio of the squares of the periods of any two planets revolving about the sun is equal to the ratio of the cubes of their average distances from the sun.
The video took the greater part of the class and we were left with about 20 minutes to finish up Study Guide 8. Also those who missed the lab yesterday were given time to finish that up.
That was it for today and i'll see you guys all back in class tomorrow.
Saturday, April 19, 2008
04/18/08 - The Scribe #2
Friday's class...during that class, we went through the questions that were assigned (green book. page 213, 227). I would post the questions/answers but I did not get all of them. Following that, we had a choice. Students either did this lab pertaining to cute whined-up toys or used the class time to study for Monday's test. That was about it.
Good luck on the test everyone. The next scrible will be Aznflame.
Good luck on the test everyone. The next scrible will be Aznflame.
Thursday, April 17, 2008
&& finally...
Okay.. so both kadeem and i kind of 4got about the blog.. haha.. opps..
but here it is:
2day we went over all the answers 4 the assigned qus. yesterday. the answers + some of the work was (fr. the green book, pg 213):
#1: w=Fd
w = (80N)(10m)
w = 800J
#3: W = 176J
d = 0.3 m
w = Fd ---> F = w/d
= 176/0.3
= 586.6
#5: (0.25)(0.12)(3) + ((0.23-0.12)/2) = 0.145
#8a)
b) w= Fd
= 1319
c) w = -11319J
#10: F = 845N ; d=185m ; w=1.2*10^4 J
w = F cos (feta) d
(feta) = 60 degrees
#12: Now work is done as F 10 is perpendicular to the distance
#17a: F = 9.8*240
#17b: both distance and work = 0
#17c: w = Fd
-5527.25
# 17d: No it does not exert any force
#22a: cos 32 = 805 N/ H
#22b: F = 805N
angle = 32 degrees
w = Fd
w = (805)(22)
w = 17710 J
# 22c: w = 17710
t = 10s
p = w/t
= 2213.75 watts
#23: F(2) = F(1) cos 45
=(42.3)(cos45)
= 29.91N
w = Fd
w = (29.91)(16)
w = 478.56 J
p = w/t
p = 478.56/3
159.52 watts
... wow that took long
&& hw 4 2night is.. 1, 3, 6, 9, 10, 12, 14, 21, 23 on pg 237
scribe ... i don't know whoever wants to be =)
but here it is:
2day we went over all the answers 4 the assigned qus. yesterday. the answers + some of the work was (fr. the green book, pg 213):
#1: w=Fd
w = (80N)(10m)
w = 800J
#3: W = 176J
d = 0.3 m
w = Fd ---> F = w/d
= 176/0.3
= 586.6
#5: (0.25)(0.12)(3) + ((0.23-0.12)/2) = 0.145
#8a)
b) w= Fd
= 1319
c) w = -11319J
#10: F = 845N ; d=185m ; w=1.2*10^4 J
w = F cos (feta) d
(feta) = 60 degrees
#12: Now work is done as F 10 is perpendicular to the distance
#17a: F = 9.8*240
#17b: both distance and work = 0
#17c: w = Fd
-5527.25
# 17d: No it does not exert any force
#22a: cos 32 = 805 N/ H
#22b: F = 805N
angle = 32 degrees
w = Fd
w = (805)(22)
w = 17710 J
# 22c: w = 17710
t = 10s
p = w/t
= 2213.75 watts
#23: F(2) = F(1) cos 45
=(42.3)(cos45)
= 29.91N
w = Fd
w = (29.91)(16)
w = 478.56 J
p = w/t
p = 478.56/3
159.52 watts
... wow that took long
&& hw 4 2night is.. 1, 3, 6, 9, 10, 12, 14, 21, 23 on pg 237
scribe ... i don't know whoever wants to be =)
April 16, 2008
Hey it's Kevin. On April 16th we corrected the chapter 10/11 study guides which included 10.1: Energy and Work, 11.2: The many forms of Energy, and 11.2: Conservation of Energy. We also corrected the Concept-Development Practice Page 8-3 worksheet on momentum and energy. For the rest of the class we worked on questions from the green text book.
next scribe is ...........kadeem
next scribe is ...........kadeem
Tuesday, April 15, 2008
Hooke's Law
Hi everyone, it's Elizabeth
Today, we have done the correction of the study guide which is chapter 11, we did 11.2 CONSERVATION OF ENERGY. Ms.K taught us the FORCE AND THE SPRING from the WORK AND ENERGY handout.We finally did a lab - HOOKE'S LAW. I guess thats about it.
night!
Today, we have done the correction of the study guide which is chapter 11, we did 11.2 CONSERVATION OF ENERGY. Ms.K taught us the FORCE AND THE SPRING from the WORK AND ENERGY handout.We finally did a lab - HOOKE'S LAW. I guess thats about it.
night!
Work and Energy.....
Hi, it's Febi again and it's Monday, I'm scribing for Monday cause the next person was not in class today.....
For today's class, we revised the Energy in it's Many forms study guide.
We also did the second page which is Conservation of Energy, pg 227- 231 in the green book.(we'll go over it tomorrow).
Ms K. gave us Momentum and Energy Worksheet and we went through the notes for Work and Energy.
As I said on friday, there's a test coming up and it's gonna be on the 21st (mon) so get ready............
It'll be on - Circular motion
- Work and energy.
Next scribe is ......................Elizabeth.
For today's class, we revised the Energy in it's Many forms study guide.
We also did the second page which is Conservation of Energy, pg 227- 231 in the green book.(we'll go over it tomorrow).
Ms K. gave us Momentum and Energy Worksheet and we went through the notes for Work and Energy.
As I said on friday, there's a test coming up and it's gonna be on the 21st (mon) so get ready............
It'll be on - Circular motion
- Work and energy.
Next scribe is ......................Elizabeth.
Saturday, April 12, 2008
Down the Hill Lab...........
Hi everyone, it's Febi. I'm scribing for Friday.
In Friday's class, we did another Lab titled Down the Hill, pg 330 in the green book.
Ms. K also handed out a study guide titled Energy in it's many forms. The lab that was done on Friday is due on monday, so you might want to get it completed over the week end. This lab kind'a explains KINETIC ENERGY and POTENTIAL ENERGY.
Ek= 1/2 m(v.v) (get the idea ? half of the mass times v- squared.)
Ep= mgh (mass. g. height).
I think a test is around the corner, don't know when but just get prepared. Later Peeps.
Next scribe is.....Elizabeth.
In Friday's class, we did another Lab titled Down the Hill, pg 330 in the green book.
Ms. K also handed out a study guide titled Energy in it's many forms. The lab that was done on Friday is due on monday, so you might want to get it completed over the week end. This lab kind'a explains KINETIC ENERGY and POTENTIAL ENERGY.
Ek= 1/2 m(v.v) (get the idea ? half of the mass times v- squared.)
Ep= mgh (mass. g. height).
I think a test is around the corner, don't know when but just get prepared. Later Peeps.
Next scribe is.....Elizabeth.
Thursday, April 10, 2008
Thursday April 10, 2008 (Scribe 2)
Hey everyone it's me Robert again. Well today in Physics class we started off by correcting and going over the Chapter 10 Study Guide for 10.1 Work and Energy.
Two things to note from the study guide:
Two things to note from the study guide:
- Work = (Force)(Distance)
- Power = (Work)/(Time)
Next we moved onto our lab that Mrs. K had ready for us. The objective of the lab was to see how much work and power a person could create walking up a flight of stairs. Once we did that we filled out the analysis and application part of the lab and handed it in.
Also Mrs. K assigned some work (at the same time as the lab) to do in the duck book.
- Duck Book : Read p. 325 - 330 & Do Problems 1 - 6 on p. 330
That was it for Today's Physics class and I will see you all tomorrow!
The next scribe is Kevin!
Wednesday, April 9, 2008
Wednesday, April 9, 2008
This class we got a lot of work done. We first started by going over the Centripetal Acceleration and Centripetal Force worksheet. It was pretty simple, basically plugging in numbers into the formulas. Next, we went over the Acceleration and Circular Motion worksheet. It involved the car and directions of the force. It was pretty straight forward and was almost all common sense. Then Ms. K handed out a worksheet titled Centripetal and Centrifugal Forces. Please make sure to read over this as it is very necessary. We also picked up another Study Guide based on Work and Energy, as our next topic. Fun, quick, easy class!
Next scribe will be Robert.
Next scribe will be Robert.
Tuesday, April 8, 2008
Today's lesson
Today Ms.K showed us how to derive the equation for centripetal acceleration. After that we worked on the worksheet called centripetal acceleration that was given before the break. Those people that had missed the lab from yesterday did that today as well.
Tomorrow's scribe will be........Bertman
Tomorrow's scribe will be........Bertman
Monday, April 7, 2008
Welcome back!
Hello everyone, it's Allyson.
I hope everyone had a well rested and fun spring break. I sure did. But now it's back to school and it's time to pull up our socks because grad is just around the corner. =(
Anyways in class today we did a lab on Centripetal Force. We timed how long it took for a rubber stopper tied to 0.8 m of string from a rod to go through 30 revolutions while spinning it above our heads. The velocity must be constant at all times to have accurate results. We also added 5 washers after each trial to add weight and to see how the results have changed.
Take care, see you all tomorrow.
-- son.
I hope everyone had a well rested and fun spring break. I sure did. But now it's back to school and it's time to pull up our socks because grad is just around the corner. =(
Anyways in class today we did a lab on Centripetal Force. We timed how long it took for a rubber stopper tied to 0.8 m of string from a rod to go through 30 revolutions while spinning it above our heads. The velocity must be constant at all times to have accurate results. We also added 5 washers after each trial to add weight and to see how the results have changed.
We needed:
- to calculate the time for 1 revolution
- speed (m/s), and
- speed^2 (m's)^2
Take care, see you all tomorrow.
-- son.
Tuesday, March 25, 2008
I noticed that no one has blogged for a long time ... A week, actually? So I will blog for today's class because I can't remember that far back... Yesterday, however, the class was taken up by the spirit week event. Yay school spirit~
Anyway... In class, we went over the Chapter 7 Study Guide, Periodic Motion; CIRCULAR MOTION.
Answers: constant, changing, changing, constant, perpendicular, tangent, instantaneous velocity, length, direction, radius, centre, centripetal, directly, inversely, second, force, centripetal force, straight, and tangent.
That was the only paragraph we went over.
We then looked at the free body diagrams worksheet, you may refer to the "Free Body Diagrams-Circular Motion" slide uploaded by Ms K.
After that she wrote us an assignment to do from the "duck book" textbook.
Which was to read p. 202-206, and do problems 1-5 on page 206.
She also wrote - Note: derivation of formula on p.205
If you didn't bring a textbook home, here's one question you can try:
The outer edge of a 120-mm-diameter CD-ROM experiences an acceleration of 1.6 m/s². What is the speed of the CD-ROM?
Reading the textbook would really help, because it stated that
V = d/t (velocity equals distance over time)
can be modified to
V = c/t (velocity equals circumference over time).
And since C = 2Ï€r (circumference equals two times pi times radius), therefore,
V = 2Ï€r/t
So that's all we did in class. I believe our catapult projectile motion project has been pushed to Thursday because of the talent show tomorrow. Yay~
Next scribe is sonson. :)
Anyway... In class, we went over the Chapter 7 Study Guide, Periodic Motion; CIRCULAR MOTION.
Answers: constant, changing, changing, constant, perpendicular, tangent, instantaneous velocity, length, direction, radius, centre, centripetal, directly, inversely, second, force, centripetal force, straight, and tangent.
That was the only paragraph we went over.
We then looked at the free body diagrams worksheet, you may refer to the "Free Body Diagrams-Circular Motion" slide uploaded by Ms K.
After that she wrote us an assignment to do from the "duck book" textbook.
Which was to read p. 202-206, and do problems 1-5 on page 206.
She also wrote - Note: derivation of formula on p.205
If you didn't bring a textbook home, here's one question you can try:
The outer edge of a 120-mm-diameter CD-ROM experiences an acceleration of 1.6 m/s². What is the speed of the CD-ROM?
Reading the textbook would really help, because it stated that
V = d/t (velocity equals distance over time)
can be modified to
V = c/t (velocity equals circumference over time).
And since C = 2Ï€r (circumference equals two times pi times radius), therefore,
V = 2Ï€r/t
So that's all we did in class. I believe our catapult projectile motion project has been pushed to Thursday because of the talent show tomorrow. Yay~
Next scribe is sonson. :)
Tuesday, March 18, 2008
Scribe Post for March 18
Hi, Evan here, today we went over Chapter 7 Review (#1-4) and got our Chapter 7 Lab sheets back. We also reviewed the formulas for Projectile Motion for the test tomorrow. Test is tomorrow so remember to study, good luck on the test everyone.
Monday, March 17, 2008
PROJECTILE MOTION
Hey guys, it's Elizabeth
Today, Ms. K was not in class and we had a sub. We did the correction for of chap.7 Study Guide and the Projectile Motion (1&2) worksheet. The sub gave us one more review questions, he did the first question & I believe that we'll go over the rest of the questions tomorrow. That's all for today and yeah don't forget the test on Wednsday. GOOD LUCK!
Friday, March 14, 2008
Wednesday, March 12, 2008
Scribe for March 12!
Hi it's Stephanie!
Ok, lets get straight to it. First thing we did was hand in all our worksheets. that were suppose to be handed in. Then we did a Lab with a ruler and coins. I believed it was called
horizontal and vertical components, but im not too sure. After we did the lab we answered the questions and handed it in. Then Ms.K gave us some more worksheets to do; chapter 7 study guide and tossed ball. And we'll be correcting them soon! I believe thats all we did today! And don't forget no school tomorrow! k night guys!
Ok, lets get straight to it. First thing we did was hand in all our worksheets. that were suppose to be handed in. Then we did a Lab with a ruler and coins. I believed it was called
horizontal and vertical components, but im not too sure. After we did the lab we answered the questions and handed it in. Then Ms.K gave us some more worksheets to do; chapter 7 study guide and tossed ball. And we'll be correcting them soon! I believe thats all we did today! And don't forget no school tomorrow! k night guys!
Tuesday, March 11, 2008
Scribe for Tuesday March 11
Hey it's Kevin. Today in class we got the answers for the Conservation of Momentum worksheet. The rest of the class we worked on the worksheets due tomorrow Wednesday March 12 before class.
Remember to hand in :
Question 5 from Conservation of Momentum Worksheet
Chapter 9 Review
Chapter 9 Reteaching
Momentum in Two Dimensions Lab
the next scribe for tomorrow is Stephanie
Remember to hand in :
Question 5 from Conservation of Momentum Worksheet
Chapter 9 Review
Chapter 9 Reteaching
Momentum in Two Dimensions Lab
the next scribe for tomorrow is Stephanie
Scribe Post for March 10th
So its Justus here, doing a slightly overdue blog for yesterdays class. Anyways to begin the class we went over and corrected many of the worksheets we had ben handed out on friday/last week (I believe it was.) Worksheets corrected included, the Chapter 7: Momentum paper (the one that had the Granny and Ambrose problem on it.), the Chapter 9 Study Guide (the fill in the blank worksheet we had worked on previously), Section 9.1 Study Guide: Impulse and Momentum (the sheet with the force time graph and the trucks on the second page.) Well also did the Impulse and Momentum sheet which had the four questions on the front , and 5 conservation of momentum questions on the back.
That about sums it up I think. We also had to hand in our lab if you didnt do that on Friday.
So thats all for now, ciao!
That about sums it up I think. We also had to hand in our lab if you didnt do that on Friday.
So thats all for now, ciao!
Sunday, March 9, 2008
Friday March 7th Post
Hey guys it's Albert. On Friday I believe we did a lab on the conservation of momentum, one object colliding with another. We rolled a sphere down a little ramp colliding with another sphere at the end of the ramp, set up at an angle either to the left or to the right. I'm pretty sure we'll be going over the Impulse and Momentum and Chapter 9 Study Guide sheets so have those ready for Monday. Other than that, there's no homework. Hope you guys had a good weekend, I sure did! Next scribe is Kevin
1 - Thursday, March 6, Scribe
Today's class there was a brief over view of momentum. The overhead will be uploaded later.http://phyr1203dmci.blogspot.com/2008/03/elastic-inelastic-collisions.html
This was what Ms. K. went over on the smart board.
There was a few worksheets which needs to be worked on:
Chapter 9: Study Guide
Chapter 7: Momentum
9: Study Guide
Impulse and Momentum
The next scribe is...
BERTMAN!
Thursday, March 6, 2008
Scribe Post For Monday March 3, 2008
Hey everyone it's Robert here and I'm picking up some slack for Monday's scribe post.
On Monday we came into class with a nice start to the week. We got to watch a movie on momentum. We were instructed by Mrs. K to take down 5 points that we learned during the movie. These are the ones that i took down just in case someone missed out:
- the higher the mass of an object moving at the same speed, the more momentum
- momentum=m*v
- a = F/m a=chg in v/t
F t = chg in (m*v)
F t = delta m*v
impulse = delta momentum
- doubling the time of the force, doubles the momentum
- you can change the momentum of an object with an impulse (big force, small time) or (smaller force, longer time)
- short time to stop object means larger force
- Big time to stop object means smaller force
Well that is it for this scribe and I'll see you guys back in class tomorrow. The scribe for today with choose tomorrow's scribe.
On Monday we came into class with a nice start to the week. We got to watch a movie on momentum. We were instructed by Mrs. K to take down 5 points that we learned during the movie. These are the ones that i took down just in case someone missed out:
- the higher the mass of an object moving at the same speed, the more momentum
- momentum=m*v
- a = F/m a=chg in v/t
F t = chg in (m*v)
F t = delta m*v
impulse = delta momentum
- doubling the time of the force, doubles the momentum
- you can change the momentum of an object with an impulse (big force, small time) or (smaller force, longer time)
- short time to stop object means larger force
- Big time to stop object means smaller force
Well that is it for this scribe and I'll see you guys back in class tomorrow. The scribe for today with choose tomorrow's scribe.
My very late.....blog post
This post it is going to be for Tuesday March 4th. On Tuesday we went over the first part of the chapter 9 study guide. Ms. K said that we will be going over the Conservation of Momentum another day so have it done anyway. We were also assigned questions 50 -51 on pages 308-309 in the duck book, answers to the questions are located in the back if you would like to check.
My next post won't be late lol
My next post won't be late lol
Tuesday, March 4, 2008
Saturday, March 1, 2008
Scribe
Hi guys sorry I'm late .
On Thursday we were doing the lab about friction.
On Friday we did the test about Dynamics. And don't forget to read Chapter 9 in the Green Book.
That's all.
Next scribe is NaTaSha
On Thursday we were doing the lab about friction.
On Friday we did the test about Dynamics. And don't forget to read Chapter 9 in the Green Book.
That's all.
Next scribe is NaTaSha
Thursday, February 28, 2008
TEST TOMORROW!!!
Hey every1! No 1 has been posting so I thought I'd get us going again. .
Today in class Ms. K. went over the answers for the "Advanced Forces" assignment sheet she gave us the other day, on the Smart board. (Check out the link on the last post.) This was after we went over the answers for the "Using Concepts" on the boards in class.
The answers for those were:
1. m = 250 kg
2. F = 3000 N
3. m = 5 kg
4. coeffiecient of sliding friction = 0.255 (no units for this 1 !remember!)
5. acceleration = -2 m/s^2
skip 6
7. a = 3.267 N/kg
other side:
1a) acceleration = 4.9m/s^2
2. max acceleration = 0.2 m/s^2
3. coefficient of sliding friction = 0.4
Then Ms. K. gave gave us another assignment sheet to do. err.. & i think that was all =S
Hope I'm not missing anything! STUDY HARD! + good luck 2morrow!!!
oh ya.. and the next scribe is H2O .. try 2 post this time!
Today in class Ms. K. went over the answers for the "Advanced Forces" assignment sheet she gave us the other day, on the Smart board. (Check out the link on the last post.) This was after we went over the answers for the "Using Concepts" on the boards in class.
The answers for those were:
1. m = 250 kg
2. F = 3000 N
3. m = 5 kg
4. coeffiecient of sliding friction = 0.255 (no units for this 1 !remember!)
5. acceleration = -2 m/s^2
skip 6
7. a = 3.267 N/kg
other side:
1a) acceleration = 4.9m/s^2
2. max acceleration = 0.2 m/s^2
3. coefficient of sliding friction = 0.4
Then Ms. K. gave gave us another assignment sheet to do. err.. & i think that was all =S
Hope I'm not missing anything! STUDY HARD! + good luck 2morrow!!!
oh ya.. and the next scribe is H2O .. try 2 post this time!
Sunday, February 24, 2008
Dynamics - Forces on an Inclined Plane and Forces in Two Dimensions
Hey everyone it's xxcoolguyxx scribing for today! I apologize for the late post. Anyways on Thursday, the class started off answering the questions from p.196 #'s 1-4. Then, we answered Chapter 7 Study Guide. The answers are below this post.
Homework is Chapter 5 Review and Enrichment!
I guess that's everything we did on Thursday.
DRum RoLL PlEaSe.......
NExT SCRIBE is
Homework is Chapter 5 Review and Enrichment!
I guess that's everything we did on Thursday.
DRum RoLL PlEaSe.......
NExT SCRIBE is
Thursday, February 21, 2008
STUDY PERIOD.....sweet.
Hi everyone,
(A lil late????? Sorry, just getting the hang of things here!!)
Well, NO TEACHING was done in class on Feb 20, we had a STUDY PERIOD in which we were told to:
STUDY page 194-196
DO problems 1-4 on p.196.
It's been great pleasure scribing for today as you can see, there's nothing much to write.
NEXT SCRIBE****ding ding ding*** xxcoolguyxx.
(A lil late????? Sorry, just getting the hang of things here!!)
Well, NO TEACHING was done in class on Feb 20, we had a STUDY PERIOD in which we were told to:
STUDY page 194-196
DO problems 1-4 on p.196.
It's been great pleasure scribing for today as you can see, there's nothing much to write.
NEXT SCRIBE****ding ding ding*** xxcoolguyxx.
Tuesday, February 19, 2008
Equilibrium Problems and Inclined Planes
We had a lot done in class today. First, we continued in going through the PHYSICS 40S INTRODUCTORY UNIT WORKSHEET: VECTORS (numbers 4-8). Next, we went through the questions at the last page of the DYNAMICS UNIT-EQUILIBRIUM handout. ALL ANSWERS ARE ON THE SLIDES POSTED BY MS. K.
After going through the sheets, Ms. K started discussing about INCLINED PLANES. After that, she told us to read pages 194-196 from the book and solve the problems on page 196, 1-4.
Here are the questions:
1.A copy of Physics: Concepts and Connections leaves the printing press and slides down a 4.0-m-long ramp into the arms of an eager physics student. If the ramp is inclined at an angle of 250 to the horizontal and has a coefficient of kinetic friction of 0.10, how long will it take the 2.0-kg textbook to reach the student?
2.The plastic case from your least-favourite CD recording is flung up a frictionless ramp, inclined at an angle of 200 to the horizontal. If the case leaves your hand at a speed of 4.0 m/s, how long will it take before the case comes to rest?
3.A skateboarder slides down a frictionless ramp inclined at an angle of 300 to the horizontal. He then slides across a frictionless horizontal floor and begins to slide up a second incline at an angle of 250 to the horizontal. The skateboarder starts at a distance of 10m from the bottom of the first incline. How far up the 2nd incline will he go if the coefficient of kinetic friction on the 2nd incline is 0.10?
4.Batman is driving the Batmobile down a hill coming from the Bat cave. The hill is inclined at an angle of 300 to the horizontal and has a coefficient of kinetic friction of 0.28. What force must the Batmobile’s engine apply to cause the Batmobile to accelerate at 0.60g?
The DYNAMICS SHEET IS DUE ON THURSDAY guys!!!
That’s all for today/tonight… have a good night. =)
next scribe....FebiO
After going through the sheets, Ms. K started discussing about INCLINED PLANES. After that, she told us to read pages 194-196 from the book and solve the problems on page 196, 1-4.
Here are the questions:
1.A copy of Physics: Concepts and Connections leaves the printing press and slides down a 4.0-m-long ramp into the arms of an eager physics student. If the ramp is inclined at an angle of 250 to the horizontal and has a coefficient of kinetic friction of 0.10, how long will it take the 2.0-kg textbook to reach the student?
2.The plastic case from your least-favourite CD recording is flung up a frictionless ramp, inclined at an angle of 200 to the horizontal. If the case leaves your hand at a speed of 4.0 m/s, how long will it take before the case comes to rest?
3.A skateboarder slides down a frictionless ramp inclined at an angle of 300 to the horizontal. He then slides across a frictionless horizontal floor and begins to slide up a second incline at an angle of 250 to the horizontal. The skateboarder starts at a distance of 10m from the bottom of the first incline. How far up the 2nd incline will he go if the coefficient of kinetic friction on the 2nd incline is 0.10?
4.Batman is driving the Batmobile down a hill coming from the Bat cave. The hill is inclined at an angle of 300 to the horizontal and has a coefficient of kinetic friction of 0.28. What force must the Batmobile’s engine apply to cause the Batmobile to accelerate at 0.60g?
The DYNAMICS SHEET IS DUE ON THURSDAY guys!!!
That’s all for today/tonight… have a good night. =)
next scribe....FebiO
Monday, February 18, 2008
STATIC EQUILIBRIUM-
this is 90039305...last Friday..as we got in to Physics class we first discussed the static equilibrium with the worksheet she gave us couple of days ago.(chapter 4: Newton's second law- forces and acceleration)..the Nellie newton law..
Static Equilibrium occurs when the net force is Zero..
After that, we answered all together the long sheet numbers 1-4 (answers were been posted by Ms.K) then the rest are practices for us..Then Ms.K hand out new worksheet, to be hand in on Wednesday. 5items assignment..
and thats all..
sorry for the delayed..
i hope you guys are enjoying your long weekend.=))
the next scribe is AEBE.
lets all enjoy our rest day.and get ready for tomorrow!see you guys!
Static Equilibrium occurs when the net force is Zero..
After that, we answered all together the long sheet numbers 1-4 (answers were been posted by Ms.K) then the rest are practices for us..Then Ms.K hand out new worksheet, to be hand in on Wednesday. 5items assignment..
and thats all..
sorry for the delayed..
i hope you guys are enjoying your long weekend.=))
the next scribe is AEBE.
lets all enjoy our rest day.and get ready for tomorrow!see you guys!
Thursday, February 14, 2008
FBD 02-14-08
next scribe, as she wished, is...90039305.
Wednesday, February 13, 2008
Wednesday's Class
Hi! This is CowMilk..................Today Ms.K was away,a substitute came for her and assigned us to read the "Physic Book" ,and he handed out some pages to work on ...That is all today
Next scribe will be uhhhhhhhhhhhhh Jessica ^^
Monday, February 11, 2008
02/11/08 - Scribe Post
Lets start off the blogging. Today in Physics, we went over the sheet entitled "Physics 40S Relative Motion" dealing with the cases. Here are the answers:
Case One - 135 Km/h [E]
Case Two - a) 250 Km/h [W]
b) 250 Km/h [E]
Case Three - a) 10 Km/h [W]
b) 10 Km/h [E] or -10 Km/h
c) 70 Km/h [W]
Now that is finished, what comes next...Ah! Ms. K handed a sheet entitled "Physics 40S Acceleration Problems" or as Ms. K liked to characterize it as "The Donovan Bailey Worksheet".
It was a normal day in Physics. Pretty boring. By the way, there is a test tomorrow. Also, the next scribe is CowMilk. Cool name. VN power!!!
Study hard.
Case One - 135 Km/h [E]
Case Two - a) 250 Km/h [W]
b) 250 Km/h [E]
Case Three - a) 10 Km/h [W]
b) 10 Km/h [E] or -10 Km/h
c) 70 Km/h [W]
Now that is finished, what comes next...Ah! Ms. K handed a sheet entitled "Physics 40S Acceleration Problems" or as Ms. K liked to characterize it as "The Donovan Bailey Worksheet".
It was a normal day in Physics. Pretty boring. By the way, there is a test tomorrow. Also, the next scribe is CowMilk. Cool name. VN power!!!
Study hard.
Friday, February 8, 2008
Thursday, February 7, 2008
Scribe Post
Hello!
To start things off in today's class Ms K handed out "Acceleration assignment", which is due on MONDAY.
She then after got a few of us to "warm up" with visual examples of;
And for the rest of the class we worked on the textbook questions from the day before and got two more worksheets, which from what I believe we will be going over tomorrow.
NEXT SCRIBE IS: NT*
have fun:)
OH ~ and Happy Chinese New Year! Wish you all much luck and success in the future... especially in physics ;)
To start things off in today's class Ms K handed out "Acceleration assignment", which is due on MONDAY.
She then after got a few of us to "warm up" with visual examples of;
- Two moving "cars"(students) and one "cop". Car A moving at 4 mph and Car B at 10mph. Ms K used problem scenarios for us to determine the speed of an object, under different reference frames.
Ex) Car A and Car B are moving in opposite directions.
A cop car is sitting perpendicularly to both of the cars, what speed does the cop read for Car B?
What is the speed of Car B in reference to Car A?
- She then used a "current" that was 3 mph, and then a "swimmer" at 4 mph (I'm not exactly sure if those were the mph numbers, probably not :P) And again asked us relating questions.
And for the rest of the class we worked on the textbook questions from the day before and got two more worksheets, which from what I believe we will be going over tomorrow.
NEXT SCRIBE IS: NT*
have fun:)
OH ~ and Happy Chinese New Year! Wish you all much luck and success in the future... especially in physics ;)
Wednesday, February 6, 2008
Wednesday, February 6, 2008
Hello fellow classmates this is AznFlame and I will be scribing today. Well today in class we went over and corrected the Gr.12 Physics Acceleration assignment and the Physics 40S Acceleration questions on the board. we also had to read a few pages from the text book pages 95-103(not sure), and got a worksheet from Ms. K on relative velocities.
next scribe will be jadanet
next scribe will be jadanet
Monday, February 4, 2008
Scribe List
This is The Scribe List. Every possible scribe in our class is listed here. This list will be updated every day. If you see someone's name crossed off on this list then you CANNOT choose them as the scribe for the next class.
This post can be quickly accessed from the [Links] list over there on the right hand sidebar. Check here before you choose a scribe for tomorrow's class when it is your turn to do so.
This post can be quickly accessed from the [Links] list over there on the right hand sidebar. Check here before you choose a scribe for tomorrow's class when it is your turn to do so.
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