A recording engineer works in a soundproofed room that is 47.5 dB quieter than the outside. If the sound intensity in the room is 1.40 x 10^-10 W/m2, what is the intensity outside?
-47.5=10log( 1.40 x 10^-10/Io
divid each side by ten, then the antilog of each side, and solve.
mary, I think we are in the same class
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