What is the velocity of a wave with a frequency of 2.0 hz and a wavelength of 0.4?

The velocity of the wave is calculated by multiplying the wavelength with the frequency. It is to be noted that the unit Hz is equal to 1/s. 

 velocity = (wavelength)(frequency)

Substituting the known values,

velocity = (0.4 m)(2/s) = 0.8 m/s

0.8 m/s

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