Question

An electronic point source emits sound isotropically at a
frequency of 3 × 10^{3} Hz and a power of 27 watts. A small
microphone has an area of 0.78 cm^{2} and is located 184
meters from the point source.

1)

What is the sound intensity at the microphone ?

*I* =

2)

What is the power intercepted by the microphone?

**P _{in}** =

3)

How many minutes will it take for the microphone to recieve 0.2 Joules from this sound?

**ΔT** =

4)

What is the sound intensity level at the microphone from this point source?

**Β** =

5)

What would be the sound intensity level at the microphone if the point source doubled its power output?

**Β** =

Answer #1

An electronic point source emits sound isotropically at a
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1)
What is the sound intensity at the microphone ?
I =
2) What is the power intercepted by the microphone?
Pin =
3) How many minutes will it take for the microphone to recieve
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ΔT...

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What is the sound intensity at the microphone ?
I =
2)
What is the power intercepted by the microphone?
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3)
How many minutes will it take for the microphone to recieve 0.2
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Part A - The intensity of sound, II, is defined by which of the
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I=PaI=Pa
SubmitPrevious Answers
Correct
Part B - How far fromt he speaker would you need to stand (under
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