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When the outward force due to fusion and radiation balances with the inward force of gravity a star is said to be experiencing what?
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What does the equilibrium between the outward pressures of radiation and the force of gravity do?
"While the star can produce energy, that keeps the star in balance - it keeps the star from collapsing. By the way, another outward force is the gas pressure, but that, by itself, is not enough to counteract the force of gravity in the case of a star."
What two forces are at work in a star?
In actual stars, all four fundamental forces (strong, weak, electromagnetic, gravity) are at work.
What does the euilibrium between the outward pressures of radiation and the force of gravity do?
It allows the sun to be relatively stable for the last 4.5 billion years. (and hopefully for the next 5 billion.)
What is a force that causes an object to move outward in a circle?
gravity. (gravitational force.)
What situations may show that pressure acts in all directions?
When your body explodes outward from your center of gravity in space. There is no pressure in space. Your body's inner pressure is about the same as the earth's, preventing the earth's pressure from crushing you. In space, your body's pressure, as it has nothing pressing against it, expands outward in all directions until you are ripped apart.
What does the equilibrium between the outward pressures of radiation and the force gravity do?
"While the star can produce energy, that keeps the star in balance - it keeps the star from collapsing. By the way, another outward force is the gas pressure, but that, by itself, is not enough to counteract the force of gravity in the case of a star."
What does the equilibrium between the outward pressures of radiation and the force of gravity do?
"While the star can produce energy, that keeps the star in balance - it keeps the star from collapsing. By the way, another outward force is the gas pressure, but that, by itself, is not enough to counteract the force of gravity in the case of a star."
What two forces are at work in a star?
In actual stars, all four fundamental forces (strong, weak, electromagnetic, gravity) are at work.
Is a nebula held together of the outward force of gravity?
No an nebula is held together by the balance of the inward force of gravity and outward pressure.
How does energy transferred outward?
Radiation
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 does the euilibrium between the outward pressures of radiation and the force of gravity do?
It allows the sun to be relatively stable for the last 4.5 billion years. (and hopefully for the next 5 billion.)
How does the earth exchange energy with the universe?
Radiation. Mostly sunshine in, infrared radiation outward.
What is the energy moving outward from the sun called?
Radiation.
What is the relationship between pressure and gravity on a red giant?
To start with, the star's gravitational attraction is not sufficient to offset the outward radiation pressure. As a result, the star increases in size until the two are in balance.
Stellar equilibrium relies on fusion and gravity to maintain stars in their current form?
Yes, a stable star is in equilibrium, called hydrostatic equilibrium, when the outward pressure from heat caused by core fusion processes balances the inward pull of gravity. There are other factors which alter the form of stars such as their rotation or gravity from external sources such as a nearby mass.
Does earth's gravity pull the moon outward?
No, the Earth's gravity pulls the moon in towards Earth.
