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What else can I help you with?
Is a neutron star on the main sequence?
No, neutron stars are not on the main sequence. They are the remnants of massive stars that have undergone supernova explosions and have collapsed under their own gravity, resulting in a highly dense core composed primarily of neutrons.
What force would prevent the main sequence collapsing?
The primary force that prevents a main sequence star from collapsing under its own gravity is the pressure generated by nuclear fusion in its core. As hydrogen atoms fuse into helium, this fusion process releases an immense amount of energy, creating an outward pressure that counteracts the inward pull of gravity. This balance between gravitational force and the energy produced by fusion is known as hydrostatic equilibrium, allowing the star to maintain its stability throughout the main sequence phase of its lifecycle.
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).
Can an object with mass be weightless while under the influence of gravity?
No, an object with mass will always experience the gravitational force, so it cannot be truly weightless when under the influence of gravity. Weight is the measure of the force of gravity acting on an object, so as long as gravity is present, the object will have weight.
How can you measure mass?
Weight them under gravity or calculate from momentum of impact or spring load under centripetal force in space. Then refer the weight or the force to the gravity of earth at 9.81m/s2 and account for its' weight under earth gravity.
Is there gravity under water?
Definitely. A rock sinks in the ocean because gravity operates on it even under water. A log floats in water not because gravity stops under water but because the log's density is lower than that of the water.
Where do black holes get gravity?
black holes are stars which collapsed under their own gravity.
What does a stingray fall under?
It falls under water and the effect of gravity.
Under what condition the center of mass does not coincide with the center of gravity?
If the gravity is not constant over the body.
What are the examples of gravity?
-- Vast hydrogen clouds shrink and compress under the influence of gravity to form stars. -- Tiny particles of dust, gas, and rock aggregate under the influence of gravity to form planets. -- Planets execute motion in closed orbits around stars under the influence of gravity. -- Strapless evening gowns stay up in consideration of the gravity of the situation that would ensue if they did not.
What is the formula for calculating the velocity of an object falling freely under gravity, considering the acceleration due to gravity as 2g?
The formula for calculating the velocity of an object falling freely under gravity, considering the acceleration due to gravity as 2g, is v (2gh), where v is the velocity, g is the acceleration due to gravity, and h is the height from which the object falls.
How did newton first discover gravity?
i think he was sitting under a tree and an apple fell and he was wondering why it did that and it was because of gravity
