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Unformatted text preview: mitchell (jm56986) HW #7 montgomery (24131) 1 This print-out should have 13 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points The strength of the gravitational force be- tween objects depends on 1. the distance between the objects. 2. the mass of each object. 3. neither the masses nor the distance be- tween them. 4. the mass of each object and the distance between them. correct Explanation: 002 10.0 points Suppose the gravitational force between the moon and the earth were equal to S. If the moons mass were tripled, by what factor of S would the gravitational force be- tween the earth and moon be? Correct answer: 3. Explanation: S S = m m The mass is to be tripled, so S S = 3 m m S = 3 S 003 10.0 points Which of the objects a. a book b. the nearest star c. the Sun d. a distant galaxy exert(s) a gravitational force on you? 1. a 2. b, c and d 3. c and d 4. b 5. Another combination 6. a and d 7. a, b and c 8. c 9. a and b 10. a, b, c and d correct Explanation: All objects exert a gravitational force on you, no matter how far away they are. 004 10.0 points Since the moon is gravitationally attracted to the Earth, why doesnt it simply crash into the Earth? 1. The moon does not have enough speed to crash into the Earth. 2. When the moon moves close to the Earth, the air on the Earth repels it....
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