Question

A worker lives at a distance of 1.32 km from the factory. If the speed of sound in air be 330 m/s, how much time will the sound of factory siren take to reach the worker?

Answer 1

We have to calculate the time taken by the sound wave to reach the observer.
Given: Velocity of sound ν = 330 m/s
Distance between the observer and the source d = 1,320 m.
We know, `"Time" = "Distance"/"Speed"`
Therefore , time taken by the sound wave to reach the observer is = `1320/330` s
= 4 s
So , the time taken is 4 s .