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1. A gun at the starting line of a 100 meter dash is used to start the race. The referee at the finish line is instructed to
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Answer #1

time taken by sound to reach referee

ts = 100/343 = 0.291545 s

time taken by light to reach referee

tL = 100 / ( 3* 10^8) = 3.333* 10^-7 s

difference between timings

t = ts - tL = 0.291544666 s

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