ica18-oct14

# ica18-oct14 - happens to our gravity? A. gravity would be...

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Class 22, ICA #18, October 14. There were 9 clicker questions. For questions 1, 2, 4, 5, 6, 7, 8, 9, you got 1 mark for answering at all. For question 5, you got an extra mark for getting it right. For question 3, I didn't count at all. There were a total of 9 marks possible. The clicker questions count for a total of 3 points toward your course grade, so your points for the day = # of marks * (3/9). Clicker Question #1: Double the distance between two balls. What happens to the gravitational force? E. It's cut down to a quarter. Clicker Question #2: Double the distance, but quadruple the mass of one of the balls. What happens to the gravitational force? C. It stays the same. Clicker Question #3, #4, #5: Fiendishly clever alien shrinks our planet to half its diameter, but keeps the same mass. What

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Unformatted text preview: happens to our gravity? A. gravity would be stronger. (For #3, I didn't count it at all since some people ran out of time. For #4, I counted just whether you answered. #5 was the revote after discussion.) Clicker Question #6: Moon is 1/4th diameter of Earth, but has lower gravity. So its mass must be: C. smaller than Earth's Clicker Question #7: Where would the spaceship feel the same gravitational force from Earth as it feels from the Moon? C. Clicker Question #8: You feel no gravitational force at the location shown between Earth and Planet X. Planet X's mass is A. bigger than Earth's. Clicker Question #9: At the location shown between Earth and Planet Z, you start falling back toward Earth. Planet Z's mass is B. smaller than Earth's....
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## This note was uploaded on 11/09/2009 for the course AST 2002 taught by Professor Britt during the Fall '08 term at University of Central Florida.

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ica18-oct14 - happens to our gravity? A. gravity would be...

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