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November 24, 2014

Homework Help: Physics

Posted by Calder on Sunday, February 21, 2010 at 7:27pm.

The sound intensity of 1.0 x 10^-12 J/(m^2*s) is the threshold of hearing for humans. What is the amplitude of the motion of the air molecules? Use v=340m/s and 1.2 kg/m^3 as the density of air.

I believe the formula I would use for this is I=1/2*v*p*A^2*w^2 ...but im not sure because I dont know what w is..

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