Question

If a noise of a special machine is 100 dB, then the intensity of the machine sound in W.m 2 is

(Whisper = 10-12 w.m-2)​

Answer 1

Intensity is defined to be the power per unit area carried by a wave. Power is the rate at which energy is transferred by the wave. In equation form, intensity I is

$i = \frac{p}{a}$