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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".
What is the force that stops the sun from exploding?
The force that stops the sun from exploding is its own gravity, which creates pressure that balances the outward force of nuclear fusion occurring in the core. This delicate balance between gravity and pressure keeps the sun stable and prevents it from exploding.
Why is Jupiter made of liquid metallic hydrogen?
Jupiter is a very massive planet composed mostly of hydrogen. It is massive enough that below a certain depth the pressure from the overlying layers is enough to convert the hydrogen into its liquid metallic state.
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.
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 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".
What is the force that stops the sun from exploding?
The force that stops the sun from exploding is its own gravity, which creates pressure that balances the outward force of nuclear fusion occurring in the core. This delicate balance between gravity and pressure keeps the sun stable and prevents it from exploding.
Which force balances gravity on a rock on a hill?
The force that balances gravity on a rock on a hill is the normal force exerted by the surface of the hill on the rock perpendicular to the slope. This force prevents the rock from sliding down the hill due to gravity.
Can a planet collapse under its own gravity?
No, a planet does not collapse because gravity isn't strong enough to provide enough pressure to crush a planet. You might make a planet heavier and heavier as to increase its gravity but at some point the pressure in the planet's core will be high enough to support nuclear fusion and the planet will have changed into a star. At that point radiative pressure also begins to fight gravity.
Is the upward pushing force greater or lesser than the force of gravity?
The force on you, if you are stationary, exactly balances gravity.
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.
Specific gravity of hydrogen?
The specific gravity of hydrogen is 0.0696. Source: The Engineering Toolbox
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.
Why is Jupiter made of liquid metallic hydrogen?
Jupiter is a very massive planet composed mostly of hydrogen. It is massive enough that below a certain depth the pressure from the overlying layers is enough to convert the hydrogen into its liquid metallic state.
Why doesn't air pressure pull you down?
Over the height of a human, say, the pressure will be equal in all directions. Even so, even if there were a net downward pressure of the air, this will be a lot less than the gravity attraction on your mass. And, most seem able to withstand gravity.
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 A balloon filled hydrogen rises to a certain height stops rising why?
A balloon filled with hydrogen rises until it reaches a level in the atmosphere where the air pressure outside the balloon is equal to the pressure inside the balloon. At this point, the balloon stops rising because the difference in pressure is no longer enough to overcome the force of gravity pulling it downward.
