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Why prevents stars collapsing under the force of their own gravity?
The pressure of the fusing gasses
Why are most galaxies formed like a disk?
A galaxy is formed when a nebula collapses under the force of gravity of the matter that it contains. The process of collapsing imparts a rotational momentum to the galaxy. It is this rotational motion which gives galaxies their characteristic disk shape.
What prevents a white dwarf from collapsing under its own weight?
A white dwarf is prevented from collapsing under its own weight by electron degeneracy pressure, a quantum mechanical effect arising from the Pauli exclusion principle. In a white dwarf, electrons are packed closely together, and this degeneracy pressure provides a counterforce to the gravitational pull trying to compress the star further. As long as the mass of the white dwarf remains below the Chandrasekhar limit (approximately 1.4 solar masses), this balance is maintained, allowing the white dwarf to remain stable.
What is the purpose of the bridge pillars in supporting the structure of a bridge?
The purpose of bridge pillars is to provide support and distribute the weight of the bridge evenly, helping to prevent the bridge from collapsing under its own weight or the weight of vehicles passing over it.
How can a container hold water?
A container is able to hold water because the container's atoms are bonded closer together than each water molecule's total size. This prevents the water molecules from sliding out between the container's atoms, thereby holding the water inside.
Why does the pyramid get narrower as it gets higher?
The pyramid gets narrower as it gets higher because each layer is built on top of the previous layer, with each layer having a smaller surface area than the one below it. This design helps distribute the weight of the pyramid and prevents it from collapsing under its own weight. Additionally, the narrowing shape helps to channel and distribute forces downward, making the structure more stable.
What keeps the sun from not falling?
The sun's immense gravitational pull created by its mass keeps it from falling. The gravitational force pulls the sun's gases and radiation inward, creating a balance with the outward pressure caused by nuclear fusion reactions in its core. This balance keeps the sun stable and prevents it from collapsing under its own weight.
What prevents corrosion?
Under Coating
How do bridges work to support the weight of vehicles and pedestrians?
Bridges work by distributing the weight of vehicles and pedestrians across their structure, using a combination of materials like steel and concrete to provide strength and support. The design of the bridge, including its arches, beams, and cables, helps to evenly distribute the load and prevent the structure from collapsing under the weight.
What two forces balance each other to keep a nebula from collapsing?
In a nebula, gravitational forces act to pull the gas and dust inward, while thermal pressure, generated by the heat from the particles and radiation from nearby stars, acts outward to counterbalance this gravitational pull. The balance between these two forces prevents the nebula from collapsing under its own gravity, allowing it to maintain its structure until conditions change, potentially leading to star formation.
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 .)
What two forces stabilize a nebula?
Gravitational force pulls gas and dust particles together to form a nebula, while the outward pressure from gas particles pushing against each other (thermal pressure) prevents the nebula from collapsing under gravity. These two forces work together to stabilize a nebula.
