Determine the length of the sound wave in air, the vibration frequency at which is 680 Hz

Given:

v = 680 Hertz – vibration frequency of the sound wave;

u = 330 m / s – meters per second – the speed of sound propagation in air.

It is required to determine l (meter) – the length of the sound wave.

To determine the length of a sound wave, you must use the following formula:

u = l * v, from here we find that:

l = u / v;

l = 330/680 = 33/68 = 0.5 meters (the result has been rounded to one decimal place).

Answer: The sound wavelength is 0.5 meters (50 centimeters).