Question

The wave speed equation is v=frequency×wavelength. If the velocity of the wave is 400m/s and the wavelength is 2m, what is its frequency?

a. 100Hz
b. 200Hz
c. 300Hz
d. 400Hz

Answer 1

To find the frequency of the wave, we can rearrange the wave speed equation and plug in the given values. The frequency of the wave is 200 Hz.

Step-by-step explanation:

To find the frequency of the wave, we can rearrange the wave speed equation to solve for frequency. The equation is v = frequency × wavelength. In this case, the wave speed is given as 400 m/s and the wavelength is given as 2 m. So, we can substitute these values into the equation and solve for frequency.

Frequency = Wave speed / Wavelength

Plugging in the values, we get:
Frequency = 400 m/s / 2 m = 200 Hz

Therefore, the frequency of the wave is 200 Hz (option b).