CAIE IGCSE Physics 3.4.5 Speed of sound in air is approximately

Practise recalling the speed of sound in air and applying it to delays between visible events and the sound heard later.

Exam points

state a typical speed of sound in air in the range 330-350 m s^-1
calculate distance or time delay using v = s/t for thunder, smoke or starting-pistol contexts

[Maximum number: 1]

A loudspeaker produces a sound wave in air. The distance between the centre of a compression and the centre of a neighbouring rarefaction is 0.10 m .

State a typical value for the speed of sound in air.

any value in range from $330 \mathrm{~m} / \mathrm{s} \leqslant$ value $\leqslant 350 \mathrm{~m} / \mathrm{s}$

B1

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