A girl shouts at a cliff. She hears the echo 3 seconds later. If sound travels at 340m/s, how far away from the cliff is she?
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Answer:
(Take speed in air as 340 m//s) ? Here, t=4s,v=340m/s,d=vt2=340×42=680m
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Answer:
680m.
Explanation:
formula 2d/t
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