A person fires a starting pistol. A distant observer stood 200 metres away (measured using a 20 m tape measure or trundle wheel) records the time between seeing the flash of light from the ...
The wave equation is a very important formula that ... or \(3\times 10^{8}m\,s^{-1}\). The speed of sound in air is \(340 m\,s^{-1}\). The speed of light and sound changes in different materials.
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