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I have tried the following problem a few times and come up with ansers larger than 3.20m.

The problem: Two speakers are 3.20m apart and facing the same direction and are in phase. They each produce a 214Hz tone. What is the shortest distance directly in front of one speaker where there would be destructive interference? S of Sound is 343 m/s

Am I correct in using m=0?

Thanks for your time

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# Destructive Interference

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