- #1
sailordragonball
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At a height of 15 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 0.130 s later. The air and water temperatures are 20°C. How deep is the lake?
I know that the velocity of air at 20 degrees Celsius is 343 m/s.
I know that the velocity of freshwater at 20 degrees Celsius is 1482 m/s.
... How in the heck do I figure this out??
I know that the velocity of air at 20 degrees Celsius is 343 m/s.
I know that the velocity of freshwater at 20 degrees Celsius is 1482 m/s.
... How in the heck do I figure this out??