Aman shouts loudly close to a high wall. He hears an echo. If the man is at 40 m from the wall,
how long after the shout will the echo is heard? (v=330 m/s)
Answers
Answered by
30
Answer:0.2424seconds
Explanation:
total distance is equal to 40 m + 40m = 80m
speed + 330m/s
time=80/330
=0.2424
Answered by
21
The echo will be heard after 0.2424 seconds.
The man is standing at distance 40 m from the wall, s = 40 m.
When the man shouts loudly , first the sound will reach the wall and then the sound will be reflected from the wall and echo will be heard.
Time after which echo will be heard = 2× (distance of wall/speed of sound)
= 2(40/330)
= 0.2424 seconds
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