Sound in air 340 ms. Wave velocity ms Wavelength m Frequency Hz Example calculation. The speed of a wave is related to its frequency and wavelength according to this equation.
Light in vacuum air 300000 kms.
The wavelength result is 3 m. Wave Speed Example First determine the frequency. On the other hand if the crest of an ocean wave moves a distance of 25 meters in 10 seconds the same amount of time then the speed of this ocean wave is 25 ms. V f l.