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Anonymous users2024-02-06Schwarzschild radius formula.
r = 2gm (the square of c).
where g - gravitational constant, m - celestial mass c- speed of light g and c are constants.
Just substitut the mass of m to find the radius.
The landlord can also find r based on the escape velocity formula
The square of v = 2 r
where =g(m+m), g is the gravitational constant, m is the mass of **celestial body, m is the mass surrounding the celestial body, m ignores v=c
Your time has slowed down, and you have to pay attention to choosing a frame of reference, i.e., the observer.
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Anonymous users2024-02-051: The Earth does not turn into a black hole.
You can refer to the content about black holes in "A Brief History of Time", there are many conditions for the formation of black holes, and quality is a very important point. It seems that it takes more than 2 solar masses to collapse into a black hole (there may be more than 2, I don't remember the specifics, I dare not judge).
2: That's an interesting question.
If you're traveling at the speed of light in the direction of time, it's like you're catching up with time, so your time will be slower than your friends on Earth, and when you come back, you'll be younger than them.
There's another interesting question. If you want to reach the future, you have to travel faster than light and come back before you go, otherwise you will stay in the future and not go back to the present.
I suggest you take a look at "A Brief History of Time".
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Anonymous users2024-02-041.What is the radius of the Earth to turn the Earth into a black hole? It has nothing to do with radius, only to mass.
2.I'm sitting on a rocket at the speed of light (relatively close to the speed of light, henceforth referred to as the speed of light), and if I think I'm stationary, then the Earth is moving away from me at the speed of light, so when I go back, am I getting old or am my friends getting old? What does it mean that whose time is slow?
There is no need for a long introduction to the theory of relativity, just a simple explanation).
None of the old you go out and come back. Speed is to be canceled out, and velocity is not only magnitude but also direction.
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Anonymous users2024-02-03The first question ever seen! It is said to be a ball of about 3cm in diameter! The algorithm won't.
The second problem should be that I am young and my time is slow.
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Anonymous users2024-02-02The mass of the earth is too small to form a black hole even if it is **.
The speed of the ship reaches the speed of light.
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Anonymous users2024-02-01Don't ask such a sci-fi question here, no one can.
Even if it is, I don't know if it's true or not.
It's better to hold this ** and take a look.
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Anonymous users2024-01-31Although a black hole of any size and mass is theoretically allowed, it is impossible to become a black hole under the current conditions of the Earth.
The theory is that a black hole is a singularity that is infinitely small in size and infinitely dense (not infinitely massive), and that the laws of physics as we know it will all fail here. Black holes have a closed space-time range, called the black hole's event horizon. Both theoretical projections and actual photographs of black holes** show the horizon of the black hole, not the black hole itself.
Black holes themselves are invisible.
At the very least, the formation of stellar black holes requires very strict conditions, such as extremely strong gravitational pull and extremely high density. In the universe, only extreme cases such as supernova explosions and binary neutron star mergers are likely to lead to the formation of black holes. Such conditions do not exist in the solar system, so it is impossible for the Earth (or even the Sun) to become a black hole.
But you can calculate how much the Earth needs to be compressed if you want to turn it into a black hole?
There is a physical formula called the "Schwarzschild Radius Formula", which is specially used to calculate the size of the volume (event horizon volume) of a black hole, and its formula is as follows:
r=2gm/c^2
where: r is the Schwarzschild radius; g is the gravitational constant; m is the mass of the celestial body; c is the speed of light.
If the mass of the Earth were to be turned into a black hole, the Schwarzschild radius would be only centimeters.
It can also be calculated that if a celestial body of the mass of the Sun were to be turned into a black hole, its Schwarzschild radius would be about 3 kilometers in size.
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Anonymous users2024-01-30No, because the Earth is not a star.
According to the formation of black holes, black holes are formed by the gravitational collapse of massive stars, such as the sun, after nuclear fusion burns out, and the mass is concentrated in the infinitesimal range, forming a black hole.
Therefore, it is possible for the Earth to be swallowed by a black hole, but it will not directly become a black hole.
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Anonymous users2024-01-29It can't be, because the volume of the Sun is 4 times that of the Earth. The sun can't be a black hole, so how can the earth be a black hole?
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Anonymous users2024-01-28If there is a black hole close to Earth, then the only way for humanity is:
Quietly wait for death.
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Anonymous users2024-01-27There is no other way, the black hole is close to the earth, and human beings will die in a second.
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Anonymous users2024-01-26Don't be afraid, the earth knows that it can't beat the black hole, and it will run away.
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Anonymous users2024-01-25There is no other way to wait for death, and if the black hole is close to the earth, it is impossible to crack it with the current scientific and technological means of human beings.
At first, a large amount of gas (mostly hydrogen) is attracted by its own gravity and collapses into a star, and when it collapses, the gas atoms collide more and more frequently (and at higher speeds), making the gas hotter and higher, and the molecular thermal motion intensifies, and the hydrogen atoms collide at extremely high speeds, so that when they collide, they do not bounce off but converge to form helium. Like the hydrogen bomb**, it releases a lot of heat, and the extremely high temperature increases the pressure of the gas to reach the equilibrium point with gravity (that is, it is neither affected by gravity and continues to collapse, nor expands outward due to air pressure), however, with the consumption of fuel, the heat that can be provided is less and less, and gradually it cannot resist gravity, so the star begins to continue to collapse (don't think that the more initial fuel of the star, the longer it will live, because the greater the mass of the star, the greater the gravitational force, the more heat required to fight gravity, the faster it will be consumed, Our sun can live for another 5 billion years, and some big stars can consume the same amount of heat in 100 million years). If the mass of a star is less than the Chandrasekhar limit (such as the Sun, the Chandrasekhar limit is one and a half times the mass of the Sun, below the Chandrasekhar limit it will not collapse into a black hole, and if it is exceeded, it will. >>>More
It doesn't turn into a red giant, it's just that the shell expands, time collapses, the curvature of space is nearly infinite, parallel worlds collapse, and the white hole theory appears.
If you want to turn pressure into motivation, you must make yourself full of fighting spirit, don't let negative energy crush you all the time, you must have more positive energy, so that you don't think about some bad things to become motivation.
In the world, if the sea water turns into fresh water!
If all the seawater becomes fresh water, it will cause many organisms in the ocean to fail to adapt and die, destroy the biological chain, and lose the necessary salt for the human body, which will also affect the survival of human beings.