- #1

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## Homework Statement

What fraction of the acoustic power of a noise would have to be eliminated to lower its sound intensity level from 90 to 70dB?

## Homework Equations

I = Power/Area

B = 10 * log *(I/I

_{0})

I

_{0}= 10

^{-12}W/m

^{2}

## The Attempt at a Solution

The answer I got for this is that the new power is 1% of the original. Which I don't think is true. A nudge in the right direction would be appreciated