John Cena stands at a distance of 990 m from a cliff and claps hard. After what time gap will he hear the echo if the sound travels at a speed of 330 m/s?
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Answer:
6 seconds
Step-by-step explanation:
Speed of sound is 330 m/s.
The sound have to travel towards the cliff, and back, covering twice the distance, i.e. , 990*2 = 1980 m
Therefore time taken = Distance/Speed => 1980/330 = 6 seconds.
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