A boy is standing on a island 500m from the shore.he shouts for help but all can hear in reply is the echo of his shout from some cliffs.sound travels at 340m/s through air. What is the time interval between the boy shouting and hearing echo?
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Answer:2.9s
Explanation:
t=2d/v
d=500m
v=340m/s
1000/340=2.9s
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