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    Destructive Interference of Sound Waves

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    Two adjacent sound sources each emit a frequency of 527[Hz] in air, where the velocity of sound is 349[m/s]. How much further back would source one have to move so that an observer in front of the two sources would hear no sound?

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    Solution Preview

    V =f*wavelength
    wavelength = V/f
    = 349/527
    = 0.662 ...

    Solution Summary

    Two sound waves of the same frequency arriving at a point with the path difference of half wavelength undergo destructive interference.