How many watts of power does the siren put out

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Reference no: EM13275346

A certain siren radiates sound uniformly in all directions. At a distance of 17m from the siren, the intensity level is 49 db. How many watts of power does the siren put out? The threshold of human hearing is 1.0 x 10^-12 W/m^2

Reference no: EM13275346

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