anonymous
  • anonymous
how to prove E=mc^2
Physics
chestercat
  • chestercat
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anonymous
  • anonymous
Did you mean you want to derive this perhaps?
anonymous
  • anonymous
No it can be proved frm ur basic physics equations
anonymous
  • anonymous
how?

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anonymous
  • anonymous
wait i saw it in a book, ill search it nd post it shortly, whole proof step by step
anonymous
  • anonymous
http://www.btinternet.com/~j.doyle/SR/Emc2/Derive.htm
anonymous
  • anonymous
It relates the energy of a particle to its mass, and is a consequence of the theory of relativity. What it tells us is that mass m and energy Eare equivalent, and that a little bit of mass is equal to a large amount of energy due to teh multiplication factor of the speed of light c squared. It is this principle that permits power generation in nuclear power plants, the destructive energy of nuclear weapons, as well as the life giving energy of our sun. E=mc2 is only one part of the full equation which is far more interesting than that equation. This specific part only deals with particles at rest (the rest energy or rest mass), but there is also a part that deals with the object moving. The full equation is E=root of (pc)2+(mc2) where p is the momentum of an object. There are three interesting things that comes from this equation. The first we have dealt with, is that of a particle at rest p=0, meaning resulting in the realisation that energy and mass are equivalent. The second is that particles without mass, will still have a momentum, meaning that they will be able to move other particles about by colliding with them. Photons (particles of light) have zero rest mass, but are able to exert forces upon other objects through collision. Last but by far not the least, is that the equation predicts the anti-matter. the reason being comes from teh mathematics. If you take teh square root of any quantity, it will have two solutions. for example the square root of 4 i.e. 4√ will equal +2 and -2, because (−2)2=4 as does (+2)2=4. Therefore, the mathematics predicts that for a given momentum and rest mass, that there should exist particles with negative energy. Indeed, it was the Nobel prize winning physicist Paul Dirac who first took the second solutions seriously and predicted anti-matter a full year or two before it was experimentally observed.

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