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April 17, 2014

Homework Help: Physics

Posted by rory on Friday, November 30, 2012 at 10:22pm.

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.

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