Homework Answers
total time taken = 14.7 ms = 0.0147 s
total distance , d = 2 * length of pipe
d = 2 * 7.5 = 15 m
speed of sound in helium = distance/time taken
speed of sound in helium = 15/.0147 m/s
speed of sound in helium is 1020 m/s
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