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    I need to calculate speed of sound using an ultrasonic emitter and reciever.

    V=lambda f

    I only know F, how do I calculate wavelength?
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    As you need to know the wavelength, one possibility would be to set up a standing wave pattern and measure the distance between antinodes. This distance is half a wavelength.
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    Set up microphones connected to a C.R.O. to find the wavelength.
 
 
 
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Updated: March 17, 2011
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