Question

A child hears an echo from a cliff 4secondsafter the sound from a powerful crackers is produced . how far is thecliff from the child? (at 20 degree Celsius, speed of sound =344m/s).​

Answer 1

Explanation:

A child hears an echo from a cliff 4 seconds after the sound from a powerful cracker is produced. How far away is the cliff from the child? = 680 m.

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