A microphone in the ocean is sensitive to sounds emitted by porpoises. To produce a usable signal, sound waves striking the microphone must have an intensity of 10.7 dB. If porpoises emit sound waves with a power of 0.0491 W, how far can a porpoise be from the microphone and still be heard? Disregard absorption of sound waves by the water.© BrainMass Inc. brainmass.com March 4, 2021, 5:40 pm ad1c9bdddf
Required intensity of sound (I) = 10.7 dB
<br>Available power = 0.0491W
<br>Let us say that the purpoise is at a distance 'x' such that it emits sound which produces the required ...
The microphone in ocean sound wave absorption is examined. How far we can porpoise from the microphone is determined.