Homework Help: physics

Posted by Anonymous on Monday, November 16, 2009 at 2:18pm.

A hammer taps on the end of a 4.02 m long metal bar at room temperature. A microphone at 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 5.79 ms. What is the speed of sound in this metal?(the speed of sound in air is 343 m/s)

physics - bobpursley, Monday, November 16, 2009 at 3:36pm
They travel the same distance.

vsair*timeinair=vsmetal*timeinmetal

but time in air=time in metal+5.79s

solve for vsmetal.

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