The Wave Speed Equation
This important equation lets us find out how fast a wave is travelling, and the relationship between frequency and wavelength.
The Wave Speed Equation: Example A
You don't have to remember what a nanometre is, but the conversion factor is given in this question.
The Wave Speed Equation: Example B
In solids and liquids the particles are closer together so pass on their vibrations faster.
Measuring the Speed of Sound in Air
This is just one way showing you how to measure the speed of sound in air.
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