The average sound intensity inside a busy restaurant is 4.9 x 10-5 W/m2. How much energy goes into each ear (area = 1.9 x 10-3 m2) during a one-hour meal?
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Expert's answer
2012-09-07T09:11:10-0400
Energy = Power * time; time = 3600 seconds, Power = Area * Intensity; Energy = 1.9 * 10^-3 * 4.9 * 10^-5 * 3600 = 33516 * 10^-8 (J).
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