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Hypothetical situation in which, for simplification, only some physical aspects are considered in order to further understand or reveal contradictions between the laws governing them.

1 vote
1 answer
103 views

Yet Another Relativity Question [closed]

Intro Thank you for reading. I realize this looks like a long question, but its a homework-like/thought-experiment question, and I've tried to put as much work into it as possible before posting it, s …
1 vote
2 answers
140 views

How much motion in fluids is random motion?

Say that the only pressure differences in the atmosphere was due to the gravitational pull of the earth. That is, say pressure only changed as a function of height. So we're assuming there's no wind, …
7 votes
4 answers
2k views

Pressure in giant ball of water floating in space

In this question: Swimming in a ball of water in space They seem to have reached the conclusion that the pressure inside a giant ball of water in space is zero. Quoting the second answer: As a …
4 votes
0 answers
137 views

Thought experiment - Universe that follows f1r law [closed]

In our universe, due to reasons usually attributed to the 3D geometry of it, the forces of nature seem to mostly be 1r2, inversely proportional to the distance of the source of the …
1 vote
2 answers
363 views

Rigid bar on a pivot

Say we have a solid bar in space. It is on a pivot, the pivot being right at the bar's center of mass There is a massless rocket pushing on one end of it, making it spin, faster and faster. Suddenly …