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What does the outward and inward forces on a star have to do with its size?
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When a star's inward gravity and outward pressure are balance the star is said to be?
Hydrostatic equilibrium occurs when compression due to gravity is balanced by a pressure gradient which creates a pressure gradient force in the opposite direction. The balance of these two forces is known as the hydrostatic balance.
Under what conditions do all outward pressures on a collapsing star fail to stop its inward motion?
When one star in a close binary becomes a black hole, all outward pressures on a collapsing star fails to stop its inward motion. I got it from my astronomy book. I got tired of looking for the answer online. So, future lazy people, you're welcome.
Stars balance there inside gravity by?
The inward force of gravity is counteracted by two outward forces: gas pressure, and radiation pressure. Once the star runs out of fuel, the radiation pressure stops, the gas pressure is no longer enough to counteract gravity, and the star collapses - into a white dwarf, a neutron star, or a black hole, depending on its mass.
How a main-sequence star like the sun is able to maintain a stable size?
For most of it's life, during the hydrogen burn phase, the sun and other stars will maintain a stable size. Two opposing forces are at play, the outward force of these continuous reactions and the immense force of gravity which pulls inwards. These are in balance, giving the sun it's overall size, but as the star nears the end of it's life, the size changes to to changes in these forces.
What happens to a star when the outward force of fusion is less than the inward force?
the star collapses in on itself, and usually when the fusion stops it is in the last stages of its life as a giant or supergiant and forms a white dwarf made of the carbon left over from the second stage of helium to carbon fusion from the core of the star that takes place after the hydrogen to helium fusion. after the white dwarf is formed it will eventually cool off into a black dwarf which is basically a carbon corpse of a star
What forces are at war within a star?
A star is the equilibrium of the outward force a continuous fusion explosion versus the inward force of the gravity of its huge mass.
When a star's inward gravity and outward pressure are balance the star is said to be?
Hydrostatic equilibrium occurs when compression due to gravity is balanced by a pressure gradient which creates a pressure gradient force in the opposite direction. The balance of these two forces is known as the hydrostatic balance.
Under what conditions do all outward pressures on a collapsing star fail to stop its inward motion?
When one star in a close binary becomes a black hole, all outward pressures on a collapsing star fails to stop its inward motion. I got it from my astronomy book. I got tired of looking for the answer online. So, future lazy people, you're welcome.
What forces are opposing one another throughout the life of a star how do they influence the various stages in life cycle of a star?
The two opposing forces are gravity, pulling the star in and the outward force from the ongoing nuclear fusion reactions. As the star approaches the end of it's life, changes in the reactions occur, which cause the forces to balance out in different ways, changing the size of the star.
What two forces are at work in a star?
In actual stars, all four fundamental forces (strong, weak, electromagnetic, gravity) are at work.
Stars balance there inside gravity by?
The inward force of gravity is counteracted by two outward forces: gas pressure, and radiation pressure. Once the star runs out of fuel, the radiation pressure stops, the gas pressure is no longer enough to counteract gravity, and the star collapses - into a white dwarf, a neutron star, or a black hole, depending on its mass.
What best describes stellar equilibrium?
The balance between pressure caused by heat and gravity caused by the star's mass.
What makes a star contract?
A star contracts when the equilibrium of a star unbalances itself when the star isn't putting out enough outward force (due to a decrease in nuclear fusion and the making of helium), and the gravitational forces push itself in, causing star contraction.
Can a star create a black hole?
Yes, a star can create a black hole, at the end of its life when the fuel is exhausted and it no longer holds its shape owing to the outward pressure from heat. It can collapse under the influence of its own gravity, down to a white dwarf, or a neutron star; if enough mass remains after events in which the star might shed some of its outer envelope, the leftover mass might be so great that it can collapse all the way down to a black hole. About three to five times the mass of the Sun would have to be left over for this to happen. The reason why, is that outward forces can't balance the force of the inward pull of gravity, it is too strong for those forces which would otherwise cause matter to retain its volume (degeneracy pressure).
What is the inward force acting on a star?
Gravity.
What is the inward force that holds a star together?
Gravity, the force of attraction between all masses in the universe, is the inward force that holds a star together.
How a main-sequence star like the sun is able to maintain a stable size?
For most of it's life, during the hydrogen burn phase, the sun and other stars will maintain a stable size. Two opposing forces are at play, the outward force of these continuous reactions and the immense force of gravity which pulls inwards. These are in balance, giving the sun it's overall size, but as the star nears the end of it's life, the size changes to to changes in these forces.
