Sound Loudness: Increase of 13.98 dB

Thread starter fghtffyrdmns
Start date Dec 12, 2009
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Sound

Dec 12, 2009

fghtffyrdmns

Homework Statement

How many decibels does the loudness of a sound increase if its intensity increases 25 times?

Homework Equations

dB = 10 log\frac{I_{b}}{I_{a}}

The Attempt at a Solution

\frac{I_{b}}{I_{a}} = \frac{25}{1}

dB = 10 log\frac{25}{1}
dB = 13.98

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Dec 12, 2009

ideasrule

Homework Helper

Correct.

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