An introduction to waves
You should know and be able to use the relationship between wave speed, frequency and wavelength.
The speed of a wave - its wave speed - is related to its frequency and wavelength, according to this equation:
wave speed (metre per second) = frequency (hertz) × wavelength (metre)
For example, a wave with a frequency of 100Hz and a wavelength of 2m travels at 100 × 2 = 200m/s.
Check your understanding of the equation by having a go at this activity.
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