apping the surface of a pan of water generates a frequency of 17.5 Hz. If the wavelength of each wave is 0.45 m, how many waves pass in 23 s? Tapping the surface of a pan of water generates a frequency of 17.5 Hz. If the wavelength of each wave is 0.45 m, how many waves pass in 23 s? 2 waves 7.9 waves 10.4 waves 403 waves