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nordsb [41]
2 years ago
7

21. A person standing 49.5m from the foot of a cliff claps his hands and hears an echo 0.3

Physics
1 answer:
777dan777 [17]2 years ago
5 0

Answer:

330 m/s

Explanation:

The sound wave has to travel TO the cliff AND back = 2 * 49.5 = 99 m

magnitude of velocity =  distance / time = 99m / .3 s = 330 m/s

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Answer:

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