1. The wavelength is the ratio of the wave's speed to its frequency in hertz or 1/s. This is shown below, λ = s / f = (320 m/s) / (300 1/s) = 1.07 m The wavelength is approximately 1.07 m.
2. The frequency is the ratio between speed and the wavelength, f = (330 m/s) / 0.45 m = 733.33 hertz
