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Why does air come out of a bicycle tire when you open the valve even if the valve is pointing up?
Wiki User
∙ 15y ago
Because the air inside the tire is under pressure. Gas always flows from a region of higher pressure to a region of lower pressure. As the pressure inside the tire is greater than the pressure outside, the air always comes out of the bicycle tyre.
Wiki User
∙ 15y ago
Wiki User
∙ 9y agoAir leaves a tire when the tire valve is open due to the pressure. The pressure outside of the tire is lower than the pressure inside the tire.
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