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by samanthamel6 on February 13th, 2008

samanthamel6

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What frequency of sound traveling in air at 20°C has a wavelength equal to 1.7 m, the average height of a person? ____ Hz

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  • by Quirkie on February 13th, 2008

    Quirkie

    Depends on the air pressure.

    Convert the speed of sound that you were given for 20 degrees C to m/s and divide by 1.7m

    Why?

    If the wavelength is 1.7m, and the speed of sound is say, 340 m/s then there are 340/1.7 waves in 340 metres and these waves pass through a point in one second. Waves per second = Hz.

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