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## Homework Statement

What is the sound intensity of a whisper at a distance of 3.0 m, in W/m^2 ?

What is the corresponding sound intensity level in dB?

## Homework Equations

I=P/4*pi*r^2

## The Attempt at a Solution

I tried looking up what the power of a whisper was and I can't find any information. This would not be a difficult problem if the information was given, but I don't know how to go about it without a value for P.

Any help on this subject would be greatly appreciated.