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Jun4-09, 03:16 PM
Cyrus's Avatar
P: 4,777
If the pressure at the top of the water is zero when normally full to the top... and then there is an empty space at the top with vacuum (after you reel the balloon down), why would the water 'go up'?

What has changed? - Nothing. Nothing has changed. The pressure at the top is zero. Has been, and always will be.