Can someone help me with these Give reasons??? 1) Water does not run out of a dropper unless its rubber bulb is pressed 2) Two holes are made in a sealed oil tin to take out the oil from it. Pease someone Help!!
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Answer:
[1]1.Initially the atmospheric pressure is greater than the pressure acting on water inside the dropper.
2.Water is held inside the dropper against atmospheric pressure.
3.When the rubber bulb is pressed, pressure on water becomes greater than the atmospheric pressure and so water comes out.
Explanation:
[2] 1.It is because the air pressure enters through the same hole when a single whole is made and the flow will be slow , while when two holes are made the flow of oil will increase as the air enters from a hole and the oil flows out through the other.
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