Physics, asked by aryansingh7474, 1 year ago

A pebble is dropped freely in a well from its top.It takes 20 second for the pebble to reach the water Surface in the well. Taking g= 10 m /S Sqaure and speed of sound=330 m / s.
Find 1)the depth of Water Surface and 2) the time when echo is heard after the pebble is dropped

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Answered by Nthejasurs

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Don't know the answer properly

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