Question

How far away is a storm if you hear the sound of thunder 7.0 s after the lightning flash on a day when the air temperature is 31°C?

Answer 1

The speed of sound is given by:

$v=331\sqrt[]{1+\frac{T}{273}}$

then in this case the speed is:

$v=331\sqrt[]{1+\frac{31}{273}}=349.29$

The distance is given by:

$d=vt$

plugging the values given we have:

$\begin{gathered} d=(349.29)(7) \\ d=2445.03 \end{gathered}$

Therefore the storm is 2445.03 meters away