A hammer taps on the end of a 4.0 m long metal bar at room temp. A microphone on the other end of the bar picks up two pulses of sound, one that travels through the metal and one that travels through the air. The pulses are separated in time by 11 ms. a. what is the speed of sound in theis metal? solved: v= 6060m/s. b. if the bar was twice as long, what would be the time difference? delta t = (in ms)

A hammer taps on the end of a 4.0 m long metal bar at room temp. A microphone on the other end of the bar picks up two pulses of sound, one that travels through the metal and one that travels through the air. The pulses are separated in time by 11 ms. a. what is the speed of sound in theis metal? solved: v= 6060m/s. b. if the bar was twice as long, what would be the time difference? delta t = (in ms)

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