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What does the phrase hydrostatic equilibrium in the sun refers to?
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Is Pluto in hydrostatic equilibrium?
Yes, Pluto has been determined to be in hydrostatic equilibrium. Planets must orbit the sun (the first criterion for a planet), and must also be in hydrostatic equilibrium (which Pluto is). Pluto fails the third "planetary entrance test" set by the IAU in that it has not cleared its orbit of debris. A link can be found below to check facts and learn more.
What 3 characterisitcs do planets need to have in order to be classified as a planet?
1 It orbits around the sun. 2 it has to have a great mass to make hydrostatic equilibrium. (a round shape) 3 it has to have cleared the neighborhood.
Why is earth not in thermal equilibrium with the sun?
because the earth and the sun is not in the thermal contact with each other that is why the earth & the sun is not in thermal equilibrium.
How does the International Astronomical Union classify solar system objects?
They determine if the object :is in orbit around the Sun,has sufficient mass to assume hydrostatic equilibrium (a nearly round shape), andhas "cleared the neighbourhood" around its orbit.Look in the related link I will make below.
What are the four rules to classify a dwarf planet?
Type your answer here... if a planet breaks any of these 3 rules it becomes a dwarf planet is in orbit around the sun has sufficient mass to assume hydrostatic equilibrium (a nearly round shape), and has "cleared the neighbourhood" around its orbit
Is Pluto in hydrostatic equilibrium?
Yes, Pluto has been determined to be in hydrostatic equilibrium. Planets must orbit the sun (the first criterion for a planet), and must also be in hydrostatic equilibrium (which Pluto is). Pluto fails the third "planetary entrance test" set by the IAU in that it has not cleared its orbit of debris. A link can be found below to check facts and learn more.
What is now termed as mini or dwarf planet?
That would be an object that:* Orbits the Sun * Is in hydrostatic equilibrium (basically this means it has a round shape) * Has NOT cleared its surroundings
What are the regulations to be considered a dwarf planet?
It must be in direct orbit around the sun (not a moon of another planet) and must have achieved hydrostatic equilibrium (approximately spherical in shape).
What are the general characteristic of dwarf planet?
They are in direct orbit around the sun, they have achieved hydrostatic equilibrium (are approximately spherical), but they have not managed to clear their area of other objects (the eight major anets have).
What 3 characterisitcs do planets need to have in order to be classified as a planet?
1 It orbits around the sun. 2 it has to have a great mass to make hydrostatic equilibrium. (a round shape) 3 it has to have cleared the neighborhood.
What effect does the gravitational pulls have on the planets?
Gravitational pull gives planets their spheroidal shape (balanced by the outward push of matter, causing hydrostatic equilibrium) and also dictates their orbits, for example, their orbit around the Sun.
How would astronomers know if the theory of hydrostatic equilibrium inside the sun was not correct?
If the theory of hydrostatic equilibrium as regards the sun was not correct, then the sun would either collapse or would explode outward. Instead, the sun burns brightly in the sky just as it has done for billions of years. But perhaps a bit more review might help make things a bit clearer. The sun has massive gravity. This gravity would like to pull everything into a tiny ball. But there are countless nuclear fusion reactions occurring each second, and this generates a massive amount of thermal energy. This thermal energy wants to blow the sun apart as it acts in a direction opposite gravity. The sun's gravity is "balanced" by the thermal energy being generated. And the two are working together to determine the size of the sun and its operating (equilibrium) temperature. Keep in mind that the sun is in the middle of its life, so it will continue to do what it is doing for billions of years more.
What is the shape of the sun earth and other major planets?
Any massive enough object will be in "hydrostatic equilibrium". Usually that means "pretty close to spherical", though rapidly rotating bodies may be oblate spheroids instead.
What are the characteristic of dwarf planet?
* Like a planet, it orbits the Sun. * Like a planet, it is large enough to be in hydrostatic equilibrium (which basically means it has a round shape)* Unlike a planet, has NOT cleared its surroundings. That means it is NOT the dominant object in the surroundings of its orbit.
Why the earth is not thermal equilibrium with the sun?
because the earth and the sun is not in the thermal contact with each other that is why the earth & the sun is not in thermal equilibrium.
Why is earth not in thermal equilibrium with the sun?
because the earth and the sun is not in the thermal contact with each other that is why the earth & the sun is not in thermal equilibrium.
How are the planets in the solar system similar to the sun?
It is assumed that they all accreted from a disk of interstellar hydrogen and other elements. The Sun, the eight major planets, and many smaller bodies are rounded by gravity (hydrostatic equilibrium) although those with sufficient spin are flattened somewhat at the poles (oblate spheroids).
