Sound Intensity Video Lessons

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Problem: A concert loudspeaker suspended high off the ground emits 31.0 W of sound power. A small microphone with a 0.800 cm2 area is 53.0 m from the speaker.How much sound energy impinges on the microphone each second?

FREE Expert Solution

Sound intensity:

I=PA

1W = 1J/s

Where, P is the power an A is an area.

The sound intensity at 53.0 m from the speaker:

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Problem Details

A concert loudspeaker suspended high off the ground emits 31.0 W of sound power. A small microphone with a 0.800 cmarea is 53.0 m from the speaker.

How much sound energy impinges on the microphone each second?

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