What is the period of a wave generated by an

earthquake, if it has a wavelength of 500 meters and a

speed of 5,000 meters per second?

Period T = 0.1 second

Explanation:

Given that the

wavelength = 500 meters

speed V = 5000 meters per second

The wave speed is the ratio of wavelength to period of the wave. That is,

V = λ/T

Where

V = wave speed (m/s)

λ = wavelength (m).

T = period (s)

Using the formula above gives

5000 = 500/T

Make T the subject of formula

T = 500/5000

T = 0.1 s