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What prevents a white dwarf from collapsing under its own weight?
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Why prevents stars collapsing under the force of their own gravity?
The pressure of the fusing gasses
What keeps a star on the main sequence from collapsing?
Nuclear fusion produces heat, and heat creates the pressure which keeps the star from collapsing under its own gravity. The relationship between heat and pressure in a gas is described by the Ideal Gas Laws. It also applies to plasma (which can be described as a super heated gas).
The final stage in the evolution of the most massive stars is a?
A black hole is the last stage of a large star having mass more than 8-9 solar masses . Reason - When a star left with very less fuel in its core that it is not able to raise its core temperature by nuclear synthesis or it receive some extra matter in such way that it can no longer raise its core temperature, in both these cases star's temperature is not high enough to prevent it from collapsing under its own weight and when it happen two beams of high energy blasting out before the collapsing of the rest of the star (these jets of high energy are called the Gamma ray burst) and finally star explodes and in just one second it will blasting out energy 100 times more than our sun will produce in its entire life . Basically gamma ray burst is the baby cry of a black hole .
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 causes a nova explosion?
A nova explosion comes about of a white dwarf star has a neighbouring main sequence or aging star and is taking hydrogen and helium gas from that star. Over time, the gasses around the super dense white dwarf star build up and are compressed under the extreme gravity. Eventually the white dwarf star will ignite and explode in a runaway nuclear fusion reaction. Its different from a Super nova explosion.
What prevents galaxies from collapsing under their own weight?
Their rotation.
Why prevents stars collapsing under the force of their own gravity?
The pressure of the fusing gasses
What keeps white dwarf from collapsing under its own weight?
A white dwarf star, as well as any other stable variety of star,is held together by the pressure popularly known as "gravity".In the opposite direction, white dwarf stars are kept from collapsing completely by degeneracy pressure. Specifically, for white dwarf stars, it's electron degeneracy pressure, which arises from the fact that electrons are fermions and cannot all occupy the same energy state. For higher mass stars, the force of gravity is able to overcome this and push all the electrons into the ground state, and the star is supported by a different kind of degeneracy ... neutron degeneracy, which is the same thing but with neutrons ... and you get a neutron star. At even higher masses, even that isn't sufficient and the star collapses all the way into a black hole.
What prevents corrosion?
Under Coating
What are the statistics for dwarfism?
A dwarf is a person under 4'10".
What is the weight of a spiny puffer fish?
It depends on the maturity and species. Since you didn't mention a species, I can only give you an average weight. - Dwarf puffer fish only weigh just under an ounce. Depending on the species of the dwarf puffer fish - Ordinary puffer fish can weigh 20-30 lbs (9-13.5kg). Again, depending on the species.
Why are caterpillar tracks used in battle tanks instead of tires?
Battle tanks use caterpillar tracks to spread their heavy weight on soft ground. this prevents the sinking of land under the weight of the tank . ( as more the surface area less the pressure .)
Why is the trachea so constructed?
It needs to be able to function under the pressure of breathing and head movement without collapsing.
Are dwarf planets bigger than asteroids?
Yes. The difference is that a dwarf planet must have enough mass to have crushed it into a sphere under the influence of gravity.
How are stars shaped?
A star is a massive, luminous ball of plasma held together by gravity. A star begins as a collapsing cloud of material composed primarily of hydrogen, along with helium and trace amounts of heavier elements. Once the stellar core is sufficiently dense, some of the hydrogen is steadily converted into helium through the process of nuclear fusion. The remainder of the star's interior carries energy away from the core through a combination of radiative and convective processes. The star's internal pressure prevents it from collapsing further under its own gravity.
Can you put a teddy bear hamster with a dwarf hamster?
No, you should never under any circumstances, ever put a dwarf hamster with a teddy bear hamster.
What pigment prevents the radiation from harming structures in the under layer of the skin?
Melanin
