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Assume that the opening of the ear canal has a diameter of 7.0 mm . For...

Assume that the opening of the ear canal has a diameter of 7.0 mm . For this problem, you can ignore any focusing of energy into the opening by the pinna, the external folds of the ear. How much sound power is "captured" by one ear at 0 dB, the threshold of hearing? How much energy does one ear "capture" during 1 hour of listening to a lecture delivered at a conversational volume of 60 dB ?

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