Question

If a longitudinal wave passes a specific point seven times per second, and the distance between wave rarefaction points is 2 meters, what is the speed of the wave?

Answer 1

Answer: 14 m/s

Explanation:

The speed $S$ of a sound wave is given by the following equation:

$S=\lambda f$

Where:

$\lambda=2 m$ is the wavelength of the sound wave

$f=7 times/s=7 Hz$

$S=(2 m)(7 Hz)$

Hence:

$S=14 m/s$