Calculate the decibel level of this machine

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Reference no: EM13261621

A noisy grinding machine in a factory produces a sound intensity of 1.40 multiply.gif 10-3 W/m2.

(a) Calculate the decibel level of this machine.

(b) Calculate the new decibel level when a second, identical machine is added to the factory.

(c) A certain number of additional such machines are put into operation alongside these two. When all the machines are running at the same time the decibel level is 78.0 dB. Find the sound intensity.

W/m2

Reference no: EM13261621

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