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# hw4-1 - kveton(ajk643 hw4 morrison(60620 This print-out...

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kveton (ajk643) – hw4 – morrison – (60620) 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points Compare the gravitational force on a 16 . 5 kg mass at the surface of the Earth (with ra- dius 6 . 4 × 10 6 m and mass 6 × 10 24 kg) with that on the surface of the Moon parenleftBig with mass 1 81 . 3 M E and radius 0 . 27 R E parenrightBig . What is the force on the Earth? Answer in units of N. 002 (part 2 of 2) 10.0 points What is it on the Moon? Answer in units of N. 003 10.0 points Two balls, each with a mass of 0.884 kg, exert a gravitational force of 8 . 37 × 10 - 11 N on each other. How far apart are the balls? The value of the universal gravitational constant is 6 . 673 × 10 - 11 N m 2 / kg 2 . Answer in units of m. 004 10.0 points If our Sun were ten times as massive as it is, how many times faster or slower should the Earth move in order to remain in the same orbit?

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