# Sound waves: Power of a sound wave. What is its intensity level.

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What is the power of a sound wave (B = 32 dB) passing through an area of 12.5 cm ^2? Suppose the same sound wave passes through an area of 25 cm^2. What is its intensity level?

Â© BrainMass Inc. brainmass.com October 6, 2022, 2:14 pm ad1c9bdddfhttps://brainmass.com/physics/power/44190

#### Solution Preview

a)

B (decibels) = 10*log(I/Io)

where I = intensity, B = 32db, Io = 10^-12 W/m^2 ...

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