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Question
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
Answer
This answer is hidden. It contains 3 characters.
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