1) a sound wave with a frequency of 300 hertz is traveling through a medium at a speed of 320 meters/second. what is its wavelength?

2) a sound wave has a wavelength of 0.450 meters. if its speed in cold air is 330 meters/second, what is the wave's frequency?
a.0.890hertz
b.100hertz
c.230hertz
d.733

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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