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An electronic point source emits sound isotropically at a frequency of 3 × 10^3 Hz and...

An electronic point source emits sound isotropically at a frequency of 3 × 10^3 Hz and a power of 25 watts. A small microphone has an area of 0.72 cm^2 and is located 4.12 meters from the point source. The speed of sound is 343 m/s.

What is the sound intensity at the microphone?

What is the power intercepted by the microphone?

What is the sound intensity level (in dB) at the microphone from this point source?

What would be the sound intensity level (in dB) at the microphone if the power source doubled its power?

If a second point source is placed a distance 4.86 meters away from the microphone, what will happen to the sound intensity level at the microphone? Will it increase, decrease, or stay the same? Explain.

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Answer #1

The sound intensity level at the microphone is “increses”The sound intensity level at the microphone is “increses”

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