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... =)