A particular piano wire has middle C (261.7 Hz) for its second harmonic. The wire's length is 2.7m. What is the speed of the wave in the wire? If the wire has 270 lbs of tension what is its linear density? What is the wavelength of this tone emitted into the air? Suppose two such wires emit this tone from two separate locations. A person walks from one wire directly toward the other, noting each point where there is no perceptible sound. What is the smallest separation of two of these points (how close are the neighboring points)?

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