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Homework Help: Sound in phase

  1. Dec 4, 2005 #1
    Two speakers produce a 162Hz sound in phase. If an intensity minimum is located 3.75m from the nearer speaker, find the distance to the further speaker if the speed of sound in the air is 345m/s.

    Would it go like this
    d(1)-d(2)/wavelength=phase difference/2pi

    This doesn't seem quite right let me know what to do please.
  2. jcsd
  3. Dec 5, 2005 #2

    Andrew Mason

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    The difference in distance must equal a multiple of half a wavelength for a minimum (phase difference = [itex]n\pi[/itex] not [itex]2n\pi[/itex]).

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