(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A concert loudspeaker suspended high off the ground emits 36 W of sound power. A small microphone with a 1.0 cm^2 area is 48m from the speaker.

What is the sound intensity at the position of the microphone?

What is the sound intensity level at the position of the microphone?

2. Relevant equations

I don't know where to begin. Which formulas do I use?

* I=P/4(pie)r^2 ?

*B(beta)= 10log( I/ Io)?

But it says the microphone is 1.0cmsquared area is 48 m? What does the distance x=48m fall into any of the formulas?

3. The attempt at a solution

I Cannot solve this problem...help!

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# Homework Help: Sound intensity Help!

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