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Physics, 21.12.2020 18:20 aa1317aa

Suppose that a public address system emits sound uniformly in all directions and that there are no reflections . The intensity at a location 22 m away from the sound source is 3.0×10−4W/m23.0×10 −4 W/m 2 . What is the intensity at a spot that is 78 m away?

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