Water does not run out of a dropper unless the rubber bulb is pressed why?
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When the rubber bulb is pressed, the air pressure inside the dropper is less than that outside. Thus the outside atmospheric air pushes the water inside the dropper. Subsequently, an equilibrium is established between the outside air pressure and the inside air pressure. Thus the water does not run out.
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Answer:
When the rubber bulb is pressed, the air pressure inside the dropper is less than that outside. Thus the outside atmospheric air pushes the water inside the dropper. Subsequently, an equilibrium is established between the outside air pressure and the inside air pressure. Thus the water does not run out.
Explanation:
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