Question: At point A, 3.0 m from a small source of sound that is emitting uniformly in all directions, the sound intensity level is 53 dB.

At point A, 3.0 m from a small source of sound that is emitting uniformly in all directions, the sound intensity level is 53 dB.

(a) What is the intensity of the sound at A?

(b) How far from the source must you go so that the intensity is one-fourth of what it was at A? 

(c) How far must you go so that the sound intensity level is one-fourth of what it was at A?

(d) Does intensity obey the inverse-square law? What about sound intensity level?

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