Question

An echo produced in 16 s.whats the minimum distance travelled by an echo

Answer 1

Echo has travelled 16s means sound has travelled for 8s to the reflecting surface and 8s for returning back.

v=d/t

d=vt

=speed of sound in the given medium*8

if medium is air then distance would be

d=343*8=3744 meters

Hope this helps.

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