When you take a cup and put in underwater with the open end facing down, and when its submerged the inside stays dry....i know the reason for it, is that the air pressure inside the cup pushes down on the water and keeps it from entering the inside of the cup but what is this effect called?
2007-04-01 16:29:18 · 2 answers · asked by MiZTER S 1 in Science & Mathematics ➔ Other - Science
No "effects" that I can think of, but the air stays in there, on top, because its specific gravity is less than that of the water. Buoyancy is the force upward on the submerged object. Compressibility of the air can also be observed (ideal gas law)--the deeper you submerge the cup, the smaller that air pocket will get as the hydrostatic pressure increases and compresses the air.
2007-04-02 04:01:45 · answer #1 · answered by Adam S 4 · 0⤊ 0⤋
Are you talking about "displacement?"
2007-04-01 16:36:40 · answer #2 · answered by tkquestion 7 · 1⤊ 0⤋