How does putting my thumb over it stop the pressure?
Md Ariful Islam
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এমবিএ(মার্কেটিং)
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Dr. Md Rushad Rahman
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পিজিটি(মেডিসিন)
As long as the water and air pressure remain the same (by holding the thumb over the cap hole), the water will remain in the jug. Opening the hole lets air rush in and allows the greater water pressure to flow out through the bottom holes of the jug.
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