Waves are one way in which energy may be transferred between stores. Both mechanical and electromagnetic waves will transfer energy but not matter.

Part of

The time period of a wave can be calculated using the equation:

This is when:

- the period (
*T*) is measured in seconds (s) - frequency (
*f*) is measured in hertz (Hz)

Calculate the time period of a wave with a frequency of 50 Hz.

- Question
Calculate the time period of a wave with a frequency of 400 Hz.

The speed of a wave can be calculated using the equation:

wave speed = frequency × wavelength

This is when:

- wave speed (
*v*) is measured in metres per second (m/s) - frequency (
*f*) is measured in Hertz (Hz) - wavelength (
*λ*) is measured in metres (m)

What is the speed of a wave that has a frequency of 50 Hz and a wavelength of 6 m?

- Question
What is the speed of a wave with a frequency of 0.2 Hz and a wavelength of 25 m?