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Lowest frequency that produces interference

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Part 1

A microphone is located on the line connecting two speakers that are 0.524 m apart and oscillating 180° out of phase. The microphone is 1.97 m from the midpoint of the two speakers. What is the lowest frequency that produces an interference maximum at the microphone's location?

Part 2

What is the next lowest frequency that produces an interference maximum at the microphone's location?

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Solution Summary

The lowest frequency that produces interference is determined. The microphone is examined.

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Please refer to the attachment.

Part 1

A microphone is located on the line connecting two speakers that are 0.524 m apart and oscillating 180° out of phase. The microphone is 1.97 m from the midpoint of the two speakers. What is the lowest frequency that produces an interference maximum at the microphone's location?

Part 2

What is the next lowest frequency that produces an interference maximum at the microphone's location?

Solution:
Speaker 1 Speaker 2 Microphone ...

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