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## Homework Statement

What is the intensity of sound wave with sound intensity level 34 dB?

## Homework Equations

B = (10dB) log (I/Io) B = sound intensity level, I = intensity, Io= 1.0x10^-12 W/m^2

## The Attempt at a Solution

I figured it would be simply a matter of rearranging the equation above to solve for I and entering all the values giving:

I = Io x 10^(B/10 dB)

I = (1.0x10^-12) x 10^(34/10)

I = 2.0x10^-9 W/m^2

However the assignment tells me that I am wrong. Am I missing something very very basic? Am I using the wrong equation all together? My textbook won't tell me, so I've turned to Physics Forums. :uhh: