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A rock band uses a wall built out of 25 identical speakers. If one single speaker...

A rock band uses a wall built out of 25 identical speakers. If one single speaker can produce a sound level of 92.5 dB in the front row area, then what is the sound level produced by the whole wall?

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The decibel (dB) is a logarithmic unit equal to 10 times the base 10 logarithm of the power ratio.Thus 10dB is 10x louder than 1 dB and 20dB is 10x louder than that, (100x 1dB), and 30dB is 10x louder than 20dB. The equation for the difference in power is 10 log(P/P0). Here, P/P0 is 25, so the answer, in dB, is 92.5 + 10log(25).

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