The wave propagates over the water surface at a speed of 10 m / s. what is the period

The wave propagates over the water surface at a speed of 10 m / s. what is the period and frequency of the wave if the wavelength is 5 m?

Given:
v = 10 m / s;
L = 5 m.
To find: f -? T -?
Decision:
To find the period we use the formula: L = v * T, hence T = L / v = 5/10 = 0.5 s;
The frequency is inversely proportional to the period, f = 1 / T = 1 / 0.5 = 2 Hz;
Answer: Period 0.5 s, frequency 2 Hertz.