Water of depth 10m exerts a pressure equal to atmospheric pressure. An air bubble rises to the surface of a lake which is 20m deep. When the bubble reaches the surface, its volume is 6 cm^3. What was the volume of the air bubble at the bottom of the lake?
A) 2 cm^3 B) 3 cm^3 C) 12 cm^3 D) 18 cm^3 Ans is C
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p1v1=p2v2 dude
at surface ATM pressure implies P1=10m of H2O
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