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a) A sound wave with an intensity level of 80.1 dB is incident on aneardrum of area 0.600*10-4 m2. Calculate theenergy is absorbed by the eardrum in 4.00 minutesin μJ.

b) The sound level 25.0m from a loudspeaker is 69.0 dB. Calculate the rate at which soundenergy is produced by the loudspeaker, assuming it to be anisotropic source. Answer in W.

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