# On the surface of the water in the lake, a wave propagates at a speed of 12 m / s.

August 29, 2021 | education

| **On the surface of the water in the lake, a wave propagates at a speed of 12 m / s. What is the period and frequency of this wave if the wavelength is 5 m?**

Given:

u = 12 meters per second – wave propagation speed;

l = 5 meters – wavelength.

It is required to determine the frequency of the wave v (s ^ -1) and the oscillation period of the wave T (second).

Find the frequency of the wave:

v = u / l = 12/5 = 2.4 seconds ^ -1.

Then the wave oscillation period will be equal to:

T = 1 / v = 1 / 2.4 = 0.4 seconds.

Answer: the frequency of the wave is 2.4 seconds ^ -1, the period of oscillation of the wave is 0.4 seconds.