<PRE><B>Question 50392</B>
D=10log(I/10^12), where I is the sound intensity measured in watts per square meter. Find the decibel level of a whisper at an intensity of 5.4 x 10^10 watts per square meter. 
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D=10log[5.4x 10^10/10^12]
D=10log[5.4 x 10^-2]
D=10log[0.054]
D=10(-1.2676...)
D=-12.676... 
Cheers
stan H.

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