Saturday
April 19, 2014

Homework Help: Physics

Posted by Dean on Sunday, February 21, 2010 at 8:45pm.

a) A microphone has an area of 5cm^2. It recieves during a 4.0 s time period a sound energy of 2.0*10^-11 J. What is the intensity of the sound?

b) using intensity from a) what is the variation in pressure in the sound wave, delta P ? Use T=293 K and density of air=1.2kg/m^3

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