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hmwk-5-L07(2) - PHY 317L HOMEWORK 5 DUE on by 8:00pm...

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PHY 317L April 10, 2007 HOMEWORK # 5 DUE on April 23, 2007 by 8:00pm Instructions: Use a SCANTRON ANSWER SHEET to mark answers. Provide your NAME (last, first), UT EID , and UNIQUE NUMBER of the course. Sign and date the scantron. The answer sheets must be placed in the PHY 317L box (by bulletin board outside PAI 4.42) by 8:00pm on Monday, April 23, 2007. Late homework will not be graded. Answer the following 57 questions: 1. A basic postulate of Einstein's theory of relativity is: A) moving clocks run more slowly than when they are at rest B) moving rods are shorter than when they are at rest C) light has both wave and particle properties D) the laws of physics must be the same for observers moving with uniform velocity relative to each other E) everything is relative 2. A consequence of Einstein's theory of relativity is: A) moving clocks run more slowly than when they are at rest B) moving rods are longer than when they are at rest C) light has both wave and particle properties D) the laws of physics must appear the same to all observers moving with uniform velocity relative to each other E) everything is relative 3. Two events occur simultaneously on the x axis of reference frame S,one at x = a and the other at x = + a . According to an observer moving in the positive x direction: A) the event at x = + a occurs first B) the event x = a occurs first C) either event might occur first, depending on the value of a and the observer's speed D) the events are simultaneous E) none of the above Page 1
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