Question

Given a wave whose wavelength is 10 meters, and its period is 0.5 s, what's the speed?

Answer 1

2Hz

Step-by-step explanation:

What is the frequency of a wave if its period is 0.5 s?

2 Hz

As the frequency of a wave increases, the time period of the wave decreases and as the frequency of a wave decreases, the time period of the wave increases. So, the answer is, f = 1/0.5 = 2 Hz.