Friday
April 18, 2014

Homework Help: physics

Posted by Joe on Sunday, November 18, 2012 at 7:42pm.

Suppose the sound is emitted uniformly in all directions by a public address system. The intensity at a location 22 m away from the sound source is 3.0 x 10-4 W/m2. What is the intensity at a spot that is 78 m away?

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