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An underwater micriphone is used to record sounds emitted by porpoises. The minimum intensity level the instrument can record is 23.6dB. Assuming a porpoise emits sound at a rate of 0.0359J/s, what is the maximum distance at which the animal will still be recorded? Neglect sound absorption in water and treat the porpoise as a point sound source.

  • Physics -

    I do not believe it is a coincidence when 12 physics questions are posted in the same subject (acoustics) in eight minutes. Even though eight differnt names were used, I suspect they are all posted by the same person. I dislike this kind of deception to offload a complete homework assignment under different names, while showing no work. I answered one of them. Your turn.

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