1. The problem statement, all variables and given/known data
This is more of a conceptual question rather than a homework problem. This is my first post, so apologies if this is in the wrong section.
Consider a jar full of liquid in microgravity.
My book says:
According to the formula p = ρgh, p→0 as g→0. Thus there is no pressure in the jar when it's in microgravity.
My problem:
Isn't it true, though, that the molecules in the liquid are jiggling around? Wouldn't these molecules still inadvertently bump into the sides of the jar, creating pressure?
2. Relevant equations
p = ρgh
3. The attempt at a solution
My current thought is that the pressure due to this bumping is negligible. So the formula p = ρgh is a (good) approximation.
This is more of a conceptual question rather than a homework problem. This is my first post, so apologies if this is in the wrong section.
Consider a jar full of liquid in microgravity.
My book says:
According to the formula p = ρgh, p→0 as g→0. Thus there is no pressure in the jar when it's in microgravity.
My problem:
Isn't it true, though, that the molecules in the liquid are jiggling around? Wouldn't these molecules still inadvertently bump into the sides of the jar, creating pressure?
2. Relevant equations
p = ρgh
3. The attempt at a solution
My current thought is that the pressure due to this bumping is negligible. So the formula p = ρgh is a (good) approximation.
via Physics Forums RSS Feed http://www.physicsforums.com/showthread.php?t=703900&goto=newpost
0 commentaires:
Enregistrer un commentaire