Question

An echo returned in 3s. What is the distance of the reflecting surface from the source, given that the speed of sound is 342ms^-1

Answer 1

d = 513 m

Step-by-step explanation:

Given that,

An echo returned in 3s.

We need to find the distance of the reflecting surface from the source, given that the speed of sound is 342 m/s.

The sound will cover 2d distance. The formula for the speed is given by :

v = d/t

So,

`v=(2d)/(t)\\\\d=(vt)/(2)\\\\d=(342* 3)/(2)\\\\d=513\ m`

So, the required distance is 513 m.