Gravitationally bound system - Physics Stack Exchange
2019年12月22日 · Gravitationally bound systems in an expanding universe. 11. Do the planets really orbit the Sun? 2 ...
Gravitationally bound systems and cosmological expansion?
2017年1月10日 · Why are gravitationally bound systems unaffected by cosmological expansion? Is it because on local scales gravity has overcome the effects of the expansion of space and thus enabled localised clustering of matter into star systems, galaxies, etc. that remain in a bound configuration, unaffected by the expansion of space due to the overwhelming ...
Is gravitational binding energy or gravitational self-energy a …
2023年8月31日 · The gravitational binding energy or self-energy of a system is the minimum energy which must be added to it in order for the system to cease being in a gravitationally bound state. Equivalently, the gravitational self-energy of a body is defined as the work done by an external agent in assembling the body from the infinitesimal elements that ...
general relativity - “Negative energy” definition of “gravitationally ...
2023年10月24日 · Gravitationally bound systems in an expanding universe - physically reasonable static (or stationary) interior Schwarzschild de-Sitter solution? I suppose in some sense both of these aspects go back to the issue to which extent the idealized FLRW relations apply locally in a collapsed, overdense object.
Solved Which pulls harder gravitationally, the Earth on the - Chegg
Which pulls harder gravitationally, the Earth on the Moon, or the Moon on the Earth? Which accelerates more? O The Earth on the Moon; the Moon The Moon on the Earth; the Earth.
Please clarify how entropy increases when matter gravitationally …
The situation Baez describes is of a virialized ball of gas shrinking gravitationally. As he points out (and further emphasizes in his hint), this process doesn't conserve energy. Once you know where the energy is going, you've got the answer to what's happening with the entropy.
Is it possible to determine whether distant galaxies are ...
In other words, it is easier to check whether galaxies are gravitationally bound when there is a bunch of them, which is what I expected. I assume that, though they are all incomplete, when you get data on many objects, it creates more constraints to help solve "the equations" into something that amounts to a consistent system.
Solved The planet and its moon gravitationally attract each - Chegg
The planet and its moon gravitationally attract each other. Rank the force of attraction between each pair from greatest to least. Rank from greatest to least. To rank items as equivalent, overlap them. The correct ranking cannot be determined.
Solved The accompanying diagram shows three asteroids (A,
The accompanying diagram shows three asteroids (A, B, and C). Each asteroid is interacting gravitationally with the asteroid to its left. Using what you know about Newton’s law of gravitational force, complete the following sentences about the strength of the gravitational force experienced by each asteroid (A, B, and C).
Why do gravitationally bound regions not feel the expansion of …
2019年11月14日 · The expansion of the universe is the increase in distance between any two given gravitationally unbound parts of the observable universe with time, implying that gravitationally bound regions are not affected. I have heard this statement here on StackExchange, too.