A child hears an echo from a cliff 4 second after the sound from a powerful cracker is produced How far away is the cliff from the child? Velocity of sound in air at 20degree celsius is 344m/s PLease give the whole process properly
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A child hears an echo from a cliff 4 second after the sound from a powerful cracker is produced How far away is the cliff from the child? Velocity of sound in air at 20degree celsius is 344m/s PLease give the whole process properly
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