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What star continues to use hydrogen for energy heat from fusion causes pressure that balances the pull of gravity?
Wiki User
∙ 11y ago
I BELIEVE the answer to that is Main Sequence star :)
Wiki User
∙ 11y ago
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What happens within a contracting cloud in which gravity is stronger than pressure?
It continues to contract and collapse. In accordance with Boyle's Law, the compression of any gas also increases the temperature and pressure; at some point, the contraction will stop when pressure and gravity are equally balanced. With a very massive cloud of hydrogen, it's possible that the force of gravity will cause the extreme pressure and temperature sufficient to begin hydrogen fusion. At that point, as they say in Hollywood, "A Star Is Born".
Center of gravity on a rocket?
It is the point on the rocket where it balances it self, with the pull of gravity, and the amount of thrust it applies back on the ground to move up.
Where is the closest zero gravity place?
There is no "zero gravity" place. Gravity permeates all the universe. Astronauts in orbit are often said to be in zero gravity but they are, in reality, on a position where their orbital velocity balances the attraction of the Earth.
What role did gravity play in forming the sun?
The sun (Sol), like any star, gained so much mass (of mainly hydrogen, with some helium and lithium) that its core began a fusion reaction. Without gravity, it would not have had enough mass, and by extent pressure, to sustain fusion, and therefore would not be a star.
Why doesn't the sun blow up like a hydrogen bomb?
There is a temperature-pressure equilibrium that needs to be maintained. As more reactions take place the heat forces the interior of the sun to expand against the force of gravity, which is what keeps the explosion from moving outward. However, as the interior expands, the temperature cools until it is no longer hot enough for subsequent reactions to occur, leading to a collapse (because the gravity has not changed). As it begins to collapse, pressure and temperature increase, leading to increased reactions. This repeats as an equilibrium. A hydrogen bomb does not have a secondary constraint on the explosion like uniform pressure from gravity, which allows it to consume all of its resources on an initial expansion.
What happens within a contracting cloud in which gravity is stronger than pressure?
It continues to contract and collapse. In accordance with Boyle's Law, the compression of any gas also increases the temperature and pressure; at some point, the contraction will stop when pressure and gravity are equally balanced. With a very massive cloud of hydrogen, it's possible that the force of gravity will cause the extreme pressure and temperature sufficient to begin hydrogen fusion. At that point, as they say in Hollywood, "A Star Is Born".
Which force balances gravity on a rock on a hill?
friction
Specific gravity of hydrogen?
The specific gravity of hydrogen is 0.0696. Source: The Engineering Toolbox
The earth is just the right size to retain our atmosphere Our atmosphere is attracted by earth's?
The atmosphere is held in place by gravity. Gravity exactly balances the upward pressure gradient force. Since atmospheric pressure decreases rapidly with height, an earth without gravity would cause a strong wind upward, allowing air to rush out to space.
Which of these is not a gas hydrogen gravity helium oxygen?
Hydrogen, helium and oxygen are gases. Gravity is a physical property of any substance.
Is the upward pushing force greater or lesser than the force of gravity?
The force on you, if you are stationary, exactly balances gravity.
How does specific gravity effect head pressure?
Head pressure=specific gravity*1000*gravity*height. Therefore if specific gravity is increased head pressure will increase.
Is the upward pushing force greater or lesser than the downward pull of gravity?
The force on you, if you are stationary, exactly balances gravity.
Does air pressure affect gravity?
Gravity is a function of mass and distance. So, no air pressure does not affect gravity.
Is there is any relation between atmosphere and Gravity which made the atmosphere to stick around the Earth?
Gravity holds the atmosphere in place. In fact, it perfectly balances the upward pressure gradient force (air pressure decreases as you go up in the atmosphere, causing a gradient that would otherwise generate a VERY strong wind upward). This is called hydrostatic equilibrium.
When a star has exhausted its supply of hydrogen?
When hydrogen in the core of the star is depleted, a balance no longer exists between pressure and gravity. Core contracts, temperatures incrase. This causes outer layers to expand and cool. This star is called a GIANT.
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.
