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A child hears an echo from a cliff 4 sec...

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? Velocity of sound in air at 20°C is `344 m s^(-1)`.

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AI Generated Solution

To find the distance from the child to the cliff based on the echo heard after 4 seconds, we can follow these steps: ### Step 1: Understand the problem The child hears an echo after 4 seconds. This means that the sound travels to the cliff and back to the child in that time. ### Step 2: Identify the variables - Let the distance from the child to the cliff be \( d \). - The total distance traveled by the sound is \( 2d \) (to the cliff and back). ...
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A child hears an echo from a cliff 4 s after the sound of a powerful cracker is produced. How far away is the cliff from the child ? (Take speed in air as 340 m//s ) ?

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