Question

You are standing 5m from a loud machine. You move 10m from the machine to help reduce the intensity of the sound. Calculate the change in the sound's intensity. Show your work.

Answer 1

Answer:

Intensity is the same for a sound wave as was defined for all waves; it is I=PA I = P A , where P is the power crossing area A. ...

Sound intensity level in units of decibels (dB) is β(dB)=10log10(II0) β ( dB ) = 10 log 10 ⁡ ( I I 0 ) , where I0 = 10–12 W/m2 is the threshold intensity of hearing.

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