Question

Sound covers a distance of 2.4 km in 7 seconds. What is the frequency of waves?

Answer 1

Given that the sound wave covers a distance of 2.4 km in 7 seconds.
We know that frequency is the number of waves in a second.

Velocity of the wave=distance/time
Velocity=2400/7
Velocity=343ms

Velocity=frequency*wavelength
Velocity/Wavelength=frequency
343/2400=Frequency

Frequency=.142 Hz

Or

Frequency=1/time period
Frequency=1/7
Frequency=.142Hz


Choose the answer you like bro...Good luck ahead..

Answer 2

Frequency = Speed of sound /Distance Covered

= 7/2.4

2.91666667