A sound wave with a frequency of 300 hertz is traveling through a medium at a speed of 320 meters/seconds. What is it’s wavelength

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

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The answer would be interphase.