A microwave oven generates a sound level of 496 db when, Ask an Expert

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A microwave oven generates a sound level of 49.6 dB when consuming 1 kW of power.

Estimate the fraction of this power that is converted into the energy of sound waves. Assume the dimensions of the oven are 24.8 cm by 16.6 cm by 43.5 cm and the sound level is uniform over the outer surface.

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