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Propagation speed, frequency, and wavelength of a wave (13-2)

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Frequency

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Review

Figure 13-7 also shows something remarkable about waves: During the time that it takes an individual piece of the medium to complete one cycle of oscillation, the wave travels a distance of one wavelength through the medium. We can use this observation to relate the wavelength and frequency to the speed of the wave. Since the wave travels a distance λ in a time T, the propagation speed vp of the wave is