Question

The frequency of a sound wave is 200 hz
Calculate 1) amplitude
2)wave velocity
3) wavelength

Answer 1

Answer:

Explanation:

To find a distance we need a speed and a time, using the usual formula for speed = distance / time so distance = speed times time. That much is clear.

So let’s find speed.

Speed is given by a formula: speed = frequency times wavelength. We have f = 200 Hz and wavelength lambda = 1.5 meters. so we immediately find speed is 300 meters/second

Now let’s find the time in question.

If one wave takes 1/200 second (it’s 200 Hz) then 150 waves take 150 * 1/200 = 0.75 second.

So finally, we are in a position to say distance = 300 m/s * 0.75 s = 225 meters.