A person fires a gun standing at a distance of 55m from a wall if the speed of sound is 330m/s find the time for an echo to be heard
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Answered by
4
to find echo, the formula used will be:-
2d/t=v
where v is velocity, d is distance, t is time taken
so ATQ
t=2d/v
=55×55/330
=5×55/30
=9.16 sec(approx)
2d/t=v
where v is velocity, d is distance, t is time taken
so ATQ
t=2d/v
=55×55/330
=5×55/30
=9.16 sec(approx)
Answered by
3
Answer:
Distance=55m
distance required to hear an echo=110m
speed=330m/s
t=v/d
t=110/330
t=1/3
t=0.33s
Therefor, time taken to echo to be heard is 0.33 seconds
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