Question: A person hears a pure tone in the 500-1000-Hz range coming from two sources. The sound is loudest at points equidistant from the two sources.

A person hears a pure tone in the 500-1000-Hz range coming from two sources. The sound is loudest at points equidistant from the two sources. To determine exactly what the frequency is, the person moves about and finds that the sound level is minimal at a point 0.34m farther from one source than the other. What is the frequency of the sound?

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