1113_Physics ProblemsTechnical Physics

1113_Physics ProblemsTechnical Physics - 454 P39.63...

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454 Relativity P39.63 (a) Take the spaceship as the primed frame, moving toward the right at vc =+ 0600 . . Then ′ =+ uc x 0800 . , and u uv uv c cc c x x x = ′ + +′ = + + = 1 0 800 0 600 1 0 800 0 600 0946 2 bg af .. (b) L L p = γ : L =− = 0 200 1 0 600 0 160 2 . ly ly bgaf (c) The aliens observe the 0.160-ly distance closing because the probe nibbles into it from one end at 0.800 c and the Earth reduces it at the other end at 0.600 c . Thus, time = + = 0160 0114 . . . ly 0.800 yr . (d) K mc = F H G G I K J J 1 1 1 22 2 : K = F H G G I K J J ×× 1 10 9 4 6 1 4 00 10 3 00 10 2 58 2 . ej e j kg m s K 750 10 22 . J P39.64 In this case, the proper time is T 0 (the time measured by the students on a clock at rest relative to them). The dilated time measured by the professor is: tT = 0 where tTt Here T is the time she waits before sending a signal and t is the time required for
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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