Question

A boy hears l echo of his own voice from a distance hill after 0.8 seconds if the speed of sound in air is 340m/s .Calculate the distance of Hill from the world

Answer 1

Hey Aleena,

So the only thing you need here is :
distance = speed × time

So the speed of the wave here is 340m/s.
Time taken = 0.8s

So, By using the speed-distance formula here,

The required distance = 340 × 0.8 m.
= 272m.

Answer 2

Answer:

Explanation:

272 m