A boy opposite a surface makes a sound and hears an echo 2s later. If...
A boy opposite a surface makes a sound and hears an echo 2s later. If...
A boy opposite a surface makes a sound and hears an echo 2s later. If the rate of distance covered is 340m/s, calculate the distance of the boy from the plane surface?
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Asked by Theresa on 26th May, 2020
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