Wednesday
July 30, 2014

Homework Help: Physics

Posted by Tiara on Wednesday, January 5, 2011 at 5:54pm.

A hiker shouts toward a vertical cliff 675 m away. The echo is heard 4.00 s later.

(a) What is the speed of sound of the hiker's voice in air? m/s
(b) The wavelength of the sound is 0.774 m. What is its frequency? Hz
(c) What is the period of the wave?

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