- #1
Aoiumi
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Homework Statement
At 1 m away from the source of a sound, the intensity of the sound is 90 dB. At 10 m away the intensity is…?
The answer is 70 dB but I don't know how...
Homework Equations
I = Power/Area
The Attempt at a Solution
My thought was to set up the equations:
90dB = P/4pi
XdB = 4pir^2
I'm not sure where to go from here.