the frequency of a wave is equal to the linear speed divided the wavelength. so in equation form. f = v / l so the wavlength l = v / f where f is the frequency v iss the linear speed l is the wavelength
l = ( 5100 m/s ) / ( 2.2 Mhz ) ( 10^6 hz / 1 Mhz ) f = 0.0023 m f = 2.3 mm
