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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 4.9×103 W/m2. At a distance 3.1 times as far from the motor, what are (a) the sound intensity and (b) the sound
intensity level relative to the threshold of hearing?
(a) Number
i
Units
(b) Number
i
Units

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