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Unformatted text preview: montes (dam2772) Homework10 shih (56310) 1 This printout should have 10 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. 001 10.0 points A spaceship is measured to be 115 m long while at rest relative to the observer. If this spaceship now flies by the observer with a speed 0 . 871 times the speed of light, what length does the observer measure? Correct answer: 56 . 4975 m. Explanation: Let : L p = 115 m and v = 0 . 871 c. If L p is the proper length of the moving object, the length of the spacecraft measured by the observer is L = L p radicalbigg 1 v 2 c 2 = (115 m) radicalBig 1 (0 . 871) 2 = 56 . 4975 m . 002 10.0 points Prudence and Charity are twins raised at the center of a rotating kingdom. Charity goes to live at the edge of the kingdom for a time and then returns home. Which twin is older when they rejoin? (Ig nore any timedilation effects associated with travel to and from the edge.) 1. Charity 2. Prudence correct 3. More information is needed. 4. There will be no difference. Explanation: Prudence is older. Charitys time runs slower during the time she is at the edge of the rotating kingdom. 003 10.0 points If stationary observers measure the shape of a passing object to be exactly circular, what is the shape of the object according to observers traveling with it?...
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 Spring '10
 TSOI
 Physics, Work

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