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A water wave has a wavelength of 4.0 m and a speed of 2.0 m/s. What is the period of this wave?

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We know from wave theory that all waves have certain physical criteria.  Waves have an amplitude, which for mechanical waves such as water waves, represents a measure of the amount of energy being transmitted by the wave.  

Waves have a wavelength (Greek letter lambda) which is the distance between the adjacent portions of the wave which represent the repetition of the wave pattern.  Usually wavelength is measured between two easily identifiable...

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Period=2 second