October 7, 2015

Homework Help: Physics

Posted by Allie on Sunday, November 5, 2006 at 6:12pm.

A bat flying in a cave emits a sound and receives its echo 0.9 s later. How far away is the cave wall?

The distance there and back is given by

We are not given velocity to solve for the problem.

The velocity of sound is something you ought to memorize.
vsound= 344 m/s at room temp, standard pressure.

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