A hammer strikes one end of a thick copper rail of length 6.22 m. A microphone l

Question

A hammer strikes one end of a thick copper rail of length 6.22 m. A microphone located at the opposite end of the rail detects two pulses of sound, one that travels through the air and a longitudinal wave that travels through the rail. (The speed of sound in air is 343 m/s.) Which pulse reaches the microphone first? Find the separation in time between the arrivals of the two pulses. Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully, ms

Explanation / Answer

v1=343 m/s
v2=5950 m/s
s=6.22 m
t1=s/v1=0.0181 s
t2=s/v2=1.0453*10^-3 s
t1-t2=0.01705 s

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