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Primary School Physics 7 points
A girl clap and hear the echo after reflection of a cliff which is 660m away from her.if the velocity of sound is 330m/sec. Calculate the time taken for hearing the echo
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Distance covered by the sound = 660+660 = 1320m
Speed of sound = 330m/s
Time taken for hearing the echo = distance/speed
=> 1320/330 = 4s
The girl will hear the echo of the sound after 4 seconds.
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