Find the energy per second received by the eardrum when it


The radius of a typical human eardrum is about 4.0 mm. Find the energy per second received by the eardrum when it listens to sound that is (a) at the threshold of hearing and (b) at the threshold of pain. (The intensities for the threshold of hearing and pain are: 10^-12 W/m^2 and 1 W/m^2).

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Physics: Find the energy per second received by the eardrum when it
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