Showing posts with label space exploration. Show all posts
Showing posts with label space exploration. Show all posts
Monday, June 9, 2008
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=4π²R³/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=4π²R³/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.
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