Wednesday
April 16, 2014

Homework Help: physical

Posted by Anonymous on Thursday, March 7, 2013 at 5:47pm.

Suppose a sound of frequency 1200 Hz is emitted from a speaker 15 meters away from you. At YOUR location, the intensity is 1.0E-7 W/m2. Let me assume your eardrum has area 3E-5 m2. If the sound continues for 8 seconds, what total amount of energy is received by your ear?

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