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They annihilate each other, releasing a relatively large quantity of energy, which can be calculated using the formula e=mc2, where e is the released energy in joules, m is the mass of the particles in kilograms, and c is the speed of light in metres per second

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16y ago
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13y ago

Nothing different than when matter enters, in fact there is no way to tell whether a black hole was formed from matter or antimatter.

Once inside the black hole, if matter and antimatter react to make energy, that energy can't escape the black hole either.

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9y ago

When a particle of matter meets a particle of antimatter, the collision results in the annihilation of both particles, with a release of energy as described by Einstein's famous e=mc^2 equation. In ideal conditions, it could be described as a near perfect conversion of matter to energy.

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15y ago

It depends how much. Less than a trillionth of a mg of antimatter could vaporise a human being. So, if you're talking about a lot of antimatter, we're talking about a MASSIVE explosion.

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11y ago

it explodes

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Q: What is made when matter and antimatter collide?
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Somebody told your friend that if an antimatter alien ever set foot upon the Earth the whole world would explode into pure radiant energy?

This has some truth in it. When antimatter and matter collide, they change into energy, so the world could in theory be destroyed. Antimatter-matter collisions produce huge amounts of energy.


Is there anything not made out of matter?

Yes, antimatter - as was recently produced at CERN.


Is antimatter real?

Yes it is. This does not mean that it has the properties ascribed to it in any particular work of fiction (Star Trek's version is reasonably realistic, Green Lantern's version is hopelessly silly), but yes, something by that name does really exist. ************************************************************************* Antimatter is real. Some scientists believe that antimatter is a perfect symmetry to matter. Antimatter is very dangerous and powerful. When matter and antimatter collide, an annihilation happens. Things around it will disappear.


If an astronaut landed on a planet made of antimatter there would be an explosion and what?

The matter of the astronaut causes the antimatter to anhilate each other, creating energy close to the energy produced by the equation E=mc2.


What is the power output of the anti-matter reactor?

This question presupposes the existence of an antimatter reactor. As far as I know, no such reactor exists, or has even been designed. Antimatter reacts with matter to produce energy with virtually no matter remaining. Such a reaction is thousands of times more powerful as nuclear reactions we have used on this planet. But antimatter is difficult to make and nearly impossible to handle. As soon as it touches anything, it is gone. There is a lovely quote from a researcher who has made antimatter often. He said that if all the antimatter made at CERN were put together and reacted with matter, the resulting energy would power a light bulb for a few seconds. This even though it is the most powerful reaction we know of. There just is not enough of it to react usefully.

Related questions

How come the universe is made of matter and not antimatter?

That is not currently known. There is a slight assymetry between matter and antimatter, but so far, it seems that this assymetry is not enough to explain why there is only matter, and hardly any antimatter, in the Universe. Without such an assymetry, there wouldn't be either matter or antimatter in the Universe - just radiation. For more information about what is known, and what isn't, check the Wikipedia article on "Baryon asymmetry".


What is a thing that's not made up of matter?

antimatter and dark matter


Somebody told your friend that if an antimatter alien ever set foot upon the Earth the whole world would explode into pure radiant energy?

This has some truth in it. When antimatter and matter collide, they change into energy, so the world could in theory be destroyed. Antimatter-matter collisions produce huge amounts of energy.


Is there anything not made out of matter?

Yes, antimatter - as was recently produced at CERN.


Why do you live in a universe that is made of matter rather than antimatter?

This is not currently known. There does exist some asymmetry between matter and antimatter - meaning that they are not exact opposites in all aspects - but this asymmetry is not enough to explain why matter exists.


Is antimatter real?

Yes it is. This does not mean that it has the properties ascribed to it in any particular work of fiction (Star Trek's version is reasonably realistic, Green Lantern's version is hopelessly silly), but yes, something by that name does really exist. ************************************************************************* Antimatter is real. Some scientists believe that antimatter is a perfect symmetry to matter. Antimatter is very dangerous and powerful. When matter and antimatter collide, an annihilation happens. Things around it will disappear.


Why matter overcome antimatter?

That is one of the unsolved problems in cosmology. There seems to be a slight difference between matter and antimatter, that is, the symmetry between matter and antimatter is not perfect. But the details of baryogenesis are not known yet.


Why can't be matter stored?

antimatter particles are just like matter particles, except they have a negative charge. So, when anti matter collide with matter they would immediately annihilate each other. and we know that everything in our surroundings is matter, so it is difficult to store it. It can be only stored in Vacuum.


Anything that has volume or mass?

Matter, or antimatter.


Does All objects are made up of molecules?

no, everything that we can interact with is matter. antimatter completely demolishes itself if it comes into contact with its matter counterpart. the matter and antimatter together makes up the M (mass) of the E=MC squared equation. dark matter, which just passes right through matter and antimatter, which we call WIMPs, (Weakly Interacting Mass Particles or something. i forgot exactly)


Why the antimatter disappear in universe?

When antimatter comes into contact with matter, they annihilate each other.


If 1gram body of antimatter meets a 10gram body of matter which survives?

Initially the 9g of remaining matter would survive. Each particle of antimatter can only annihilate with one other particle of antimatter. At this point the 1g of antimatter would cause an explosion equivalent to that of 200000 pounds of TNT. Causing both groups of matter and antimatter to be obliterated.