what does E=mc2 mean?

Answer 1

http://www.worsleyschool.net/science/files/emc2/emc2.html

energy is equal to mass time the square of 300,000,000 meters per second (speed of light)

meaning. if you accelerate mass as fast as light, the mass contains X amount of energy (quite a large # even for small amounts of mass)

basically the faster stuff travels, the more energy it creates.

yes.
joules
meters per second
and kilograms

Answer 2

It means that the total energy of a material object is equal to it's mass times the speed of light squared. It implies though that as you raise the amount of energy any body has, say by increasing it's velocity (which would increase it's kinetic energy) that the mass of the object would go up.

Since, in the formulation c^2 is a constant, as energy increases, the only variable on the other side is mass, which also increases.

Don't make the mistake of thinking the m means 'matter'. It doesn't, it means mass, which is a property of matter. Also note that the equation wouldn't apply to massless objects, although you could calculate a 'mass equivalent' for such things if you measured their energy.

So, it isn't just the simple relationship that makes the equation important, it's all the implications.

Answer 3

The above answers are correct to a degree. What they leave out is "why doesn anyone care what the relationship between mass and energy is", and the answer is that they are essentially the same thing. Thus mass can be converted to energy and energy converted to mass. This happens at the subatomic level, and is the foundation of fission and fusion reactions.

In a fusion reaction, two deuterium nuclei (an isotope of hydrogen consisting of one proton and one neutron) are fused into a single helium nucleus (two protons, two neutrons). The net mass of the helium nucleus is less than the sum total mass of the deuterium nuclei. Why, you ask, would the mass of the result be less than the mass of the constituents? Because the deuterium nuclei are somewhat less stable based on the competing strong nuclear forces than the resulting helium nucleus, and so more energy is required to hold them together. That "energy" is held in the form of mass in the deuterium nucleus. When the helium nucleus is formed, and requires less energy to remain a stable nucleus, that "mass" is given up as "energy" with the relationship E = mc^2. Cool, huh??

Answer 4

Energy is a phenomenon which we observe when an object moves relative to another.
It is defined as the Product of a mass quantity and the velocity square of the moving force that the object mass experiences during its travel in space.

Masses are constructed with micromass particles which move at maximum velocity at a particular location where they exist in the space of the Universe. The maximum velocity that a micromass can move is the speed of light.

Therefore the structural energy of a mass containment is equal to the the product of the mass content and the final velocity of light square or the square of twice the average velocity of light. If we designate V final as "C" . Then the structural energy of an atomic mass structure would be equal to E final =Mass x C^2.

Note mass is a structural entity where as Energy is just the product of time and the power that causes the motion of masses in the Universe. When an object is in motion with a particular velocity we say it posseses a particular energy.

So The Energy content of a mass is the conversion of power into structural energy. So the Equation of E= MC^2 would be meaningless without the introduction of Power in the equation. Hence MC^2 = the product of Power existing inside atomic mass structure, and Time.
M= mass measured in Units of kilograms.
C= the final velocity of light measured in meters per seconds.
E= the maximum energy in the atomic structure which was converted from the inherent power present in the structure.
Time is measure in seconds ,and Power is measured in units of kilograns x (meters ^2/seconds ^3)

The Equation E= MC^2 was Published by Henri Poincare in 1901, four years before Eintein used it in his theory of Special Relativity.

Note= The power required to accelerate the smallest micromass in the Universe to the speed of Light is equal to aprox. 5 billions joules per seconds.

However; how Power in Space gets converted into Energy is still not quite understood in the science of Physics and Cosmology.

Answer 5

This famous equation led to the development of nuclear bombs! This will blow your mind, the fission bomb that was dropped on Japan released the energy stored in about eight pounds of uranium, the uranium represents the M in the formula, the energy released represents the E, and the C is the speed of light, squared. All of the matter in the universe was once a pin point of E, it was called the singularity of the big bang.

Answer 6

E = the energy equivalent to the mass (in joules)

m = mass (in kilograms)

c = the speed of light in a vacuum (celeritas) squared

Answer 7

leaving out the very big numbers, it means that even a tiny amount of matter represents a great deal of energy.