Question

an echo returned in 3 seconds what is the distance from the reflecting surface source given that the speed of sound is 342 metre per second ​

Answer 1

Answer:

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Explanation:

Speed of sound, v = 342 m s−1

Echo returns in time, t = 3 s

Distance travelled by sound = v × t = 342 × 3 = 1026 m

In the given time interval, sound has to travel a distance that is twice the distance of the reflecting surface and the source.

Hence, the distance of the reflecting surface from the source= 1026 / 2 m = 513 m

Answer 2

Speed of sound ,

$v = 342 {ms}^{ - 1}$

Echo returns in times , t = 3s

Distance travelled by sound = v×t = 342×3 = 1026 m

In the given time interval , sound has to travel a distance that is twice the distance of the reflecting surface and the source.

Hence, the distance of the reflecting surface from the source

$= > \frac{1026}{2} m$

$= > 513m$