9. (a) Water does not run out of a dropper unless its rubberbulb is pr

1.	9. (a) Water does not run out of a dropper unless its rubberbulb is pressed.
Answer» Water doesn't come out because the water cannot be replaced by air when the water is squeezed out. This is because the water would spill out, but air pressure is in the way If the hole at the end of the dropper was bigger, then the water could spill out. That is why the water spills out when you pour a drink for yourself. The water spills out , and at the same time air is spilling into the bottle. no wrong....the actual answer is because of same atmospheric pressure and water pressure inside the dropper

9. (a) Water does not run out of a dropper unless its rubberbulb is pressed.

Answer»

Water doesn't come out because the water cannot be replaced by air when the water is squeezed out. This is because the water would spill out, but air pressure is in the way If the hole at the end of the dropper was bigger, then the water could spill out. That is why the water spills out when you pour a drink for yourself. The water spills out , and at the same time air is spilling into the bottle.

no wrong....the actual answer is because of same atmospheric pressure and water pressure inside the dropper

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