What happens when a piece of iron falls out of the universe?

Don't worry, in the process of falling, the slag on the ground of the earth is gone.

When it passes through the atmosphere, it will be vaporized and will not fall to the earth.

There are no dead bodies, and all of them are hung within a radius of 100 meters.

The magnetism of the magnet is inherent to him, and there will also be magnetic force in outer space, as well as copolar repulsion and heteropolar attraction. It's just that it's not gravity in outer space.

Magnets In outer space, magnets are still magnetic, because there is no interference from the geomagnetic field, so there is only a slight difference between magnetism and the earth.

The composition of the magnet is iron, cobalt, nickel and other atoms, and the internal structure of the atoms is relatively special, and it itself has a magnetic moment. Magnet type: Shape type magnet:

Square magnets, tile magnets, shaped magnets, cylindrical magnets, ring magnets, disc magnets, bar magnets, magnet stand magnets.

It will maintain the characteristics of attraction and repulsion, and the magnetic field and the gravitational field do not interfere with each other.

A magnet that is not affected by gravity will be freer in space, (provided that the relative motion of the two magnets when placed is zero, and the space magnetic field is less than the magnetic field of the two magnets at the midpoint of the distance) If the opposite poles of the two magnets are heterogeneous, even if they are placed at a long distance, they will attract each other and finally combine together; If the poles of two magnets opposite each other are of the same level, their motion will first be relatively far away and rotate at the same time, and after many rotations (away from each other, attract, sibling, disgenerating), and finally they will still bind the opposing pairs in opposite directions (provided that they are not triggered by external forces in space).

The mass of an object is the amount of matter that the object contains. The number of holes is constant in any place and under any circumstances.

The iron block takes Senrang to space, its weight is zero, but the mass is still the original mass of this scatter, there will be no change.

As long as the things in the spaceship do not fall to the ground, no matter how heavy they are, because they all have the same orbital speed as the spaceship, and will always orbit the earth.

This mainly depends on the length and quality of the chain. If most of the chain is beyond the Earth's attraction, and the force is strong enough to free him from Earth's grasp, the chain will fly away. If the chain is mostly beyond the attraction of the earth and there are no other external forces, then it will rotate with the rotation of the earth.

If the chain is mostly in space, but not free from the Earth's bondage to him, he will fall off quickly.

I think it will, space has no gravity, and a small part of it is on the earth, which means that it is not out of the earth's gravity and will fall.

According to Newton's second law (the law of gravitation), a sufficiently long iron chain (if stationary), it will fall back to the Earth, and if it reaches the first cosmic velocity, it will become a satellite of the Earth.

Happy New Year and good health!

Not (provided that one end is fixed to the earth).

You can not fall off.

An object in low earth orbit can always move around the earth if the centrifugal force revolving around the earth is equal to the gravitational force of the earth (the general principle, there will be a variety of factors). The moon and artificial satellites are hung in the sky according to this principle.

The closer an object is to the ground with the same velocity around the earth, the greater the gravitational pull it will experience. The farther away from the earth, the greater the mental strength. Therefore, if an iron chain is placed properly, it can be suspended in the sky.

Many years ago, some scientists conceived the idea of using this method to erect a "space ladder" and save the need to leave the earth with a rocket. However, the problem of the strength of the material has not been solved so far (the action of two forces will pull the ladder apart, and the ladder is of little use if it does not reach the ground). ）

Isn't a star just a giant nuclear reactor? He consumes elements lighter than iron, leaving only iron and heavier, and those heavier will eventually decay into iron as well. Stars have every chance to attract all the matter in the universe to participate in their own nuclear reactionsAnswer:

But you will find that there are many systems that eventually tend to a stable structure, like the orbital system of the solar system, which does not suck other matter into itself

Who said that the solar system is stable, and after the sun burns (it seems that the volume is not enough, there is no ability to react to iron. It should absorb the planets of the solar system and finally wait to be swallowed up by greater perseverance. The final reaction is iron. Answer:

Even if the sun sucks it in and turns the solar system into iron.

But when other big stars are done, they will turn into neutron stars or black holes.

Can you call a neutron star and a black hole where all the neutron atoms and electrons have collapsed together? Follow-up:

My view is that there is no end form, and you can't judge iron as the end just because it's the lowest element of nuclear energy

Even if at some point the whole universe emits energy into iron, and that energy will produce new matter, as the mass-energy equation says, ask

There's no loop in between! Maybe the center of the universe will one day gather all the matter and start again**, the galaxy black hole is very large. He and the black hole of an ordinary star are not the same concept. Follow-up:

The rusting of iron is an oxidation process, not to mention the conditions required for oxidation in space, and even the oxygen atoms are pitifully few, and it is impossible to rust.

No. Rust in the general sense is a chemical reaction between Fe and O2 and H2O, and there is a lack of water and oxygen in open outer space.

Of course it doesn't rust. There is no oxygen horse.

Iron and oxygen are necessary for iron to rust, and I don't think it is possible to have oxygen in space!!

If a small iron ball were burned in space, would it become the sun?

No. What would be the reaction of an astronaut who goes to space with tools to burn a ball of iron red? What is the reaction of burning an iron ball in a place where there is no air?

How the earth reacts, the universe still reacts, the laws of science are universal in the observable universe.

If heated in a vacuum, the iron will just burn red, and the heat energy will excite the inner electrons to the excited state, and the excited electrons will return to the ground state to cause photoluminescence. Physical changes, not chemical reactions.

As for the relaxation and remodeling of surfaces, which is the subject of study by surface physicists and chemists, chemical reactions in the middle school sense do not occur in a vacuum.

Can I understand that when the sun goes out, when the earth becomes the sun?

No, the high temperature inside the sun (about 20000000K) gives hydrogen atoms enough energy to overcome the constraints of electromagnetic force and release energy through nuclear fusion, which is called nuclear fusion. At best, the temperature of the Earth's core is only 10,000 K, which is far from enough to produce nuclear fusion and become a star.

The little iron ball will not turn into the sun unless it is transformed in a nuclear way.

The iron ball will gradually change from normal color, and the temperature in space will be more than minus 200 degrees.

You can't burn where there is no air, let alone burn the iron ball, at most it can be heated by some way.

The sun goes out, and the earth is gone before that. Already devoured by the sun.