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QUESTION
You put a straw into a glass of water, place your finger over the top so no air can get in or out, and then lift the straw from the liquid. You find...
You put a straw into a glass of water, place your finger over the top so no air can get in or out, and then lift the straw from the liquid. You find that the straw retains some liquid. How does the air pressure P in the upper part compare to atmospheric pressure PA?
