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the formula for wave velocity/speed is: velocity= wavelength * wave frequency

velocity is measured in meters/second (m/s), wavelength is measured in meters(m), and wave frequency is measured in hertz(hz).

your wavelength is in millimeters, so convert it to meters and you get .002 meters.

now, fill[replace] in the numbers you know for the variables in the formula.

velocity(m/s)= .002(m) * 3(hz) do the multiplication and you get .006 the speed is .006 meters/second(m/s)

you're welcome! :)
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Q: A wave has a wavelength of 2mm and a frequency of 3Hz At what speed does the wave travel?
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