February 24, 2017

Homework Help: physics

Posted by willis tower on Tuesday, February 5, 2013 at 3:08pm.

A hiker shouts toward a vertical cliff 660 m away. The echo is heard 4.00 s later.
(a) What is the speed of sound of the hiker's voice in air?
(b) The wavelength of the sound is 0.758 m. What is its frequency?
(c) What is the period of the wave?

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