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Question: a woman stands a distance d from a loud motor...

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A woman stands a distance d from a loud motor that emits sound uniformly in all directions. The sound intensity at her position is an uncomfortable 3.4×10-3 W/m2. At a distance 2.5 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?

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