Physics, asked by disha75, 1 year ago

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

Answers

Answered by Kannada11

342*3=1026÷2=513mts is answer
I'm not sure

Answered by Aakshi971

D= vt/
D= 342*3/2
=171*3
= 513 m.

disha75: why we divided by 2

Aakshi971: The question says echo , that the sound wave first travelled distance D, striked a surface (got reflected ) and travelled along the same distance D back . Therefore total distance travelled by sound wave = 2D

disha75: okk

disha75: I understand

disha75: and thanks once again

Aakshi971: :)

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