The echo from the bottom of the lake returns to the point
At a height of ten meters above the surface of a freshwater lake, a sound pulse is generated. The echo from the bottom of the lake returns to the point of origin 0.178 s later. The air and water temperatures are 20 oC. How deep is the lake?
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at a height of ten meters above the surface of a freshwater lake a sound pulse is generated the echo from the bottom of
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