Question

an echo returned in 3 s. What is distance of the reflecting surface from the source, given that the speed of sound is 342 m s -1
​

Answer 1

Answer:

17 m

Explanation:

Answer 2

Answer:

513m

Explanation:

To hear an echo, the sound travels a distance from the observer, gets reflected off a boundary and travels back to the observer.

This means an echo travels twice the distance.

Now, speed = distance/ time

Distance = 2(distance between source and wall)

342 = 2d/3

d = 342×3/2

= 513 m