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You Put One Ear on a Steel Railroad Track While

Question 44

Multiple Choice

You put one ear on a steel railroad track while your friend a distance of 400 m away taps on the rail with a stone.You will hear the sound through the steel rail in _________ and through the air where the speed of sound is 344 m/s in _______.


A) 0.08 s
B) 0.5 s
C) 1.2 s
D) 2.4 s

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