What is e=mc2 and how is it work?

Question

What is e=mc2 and how is it work?

Answer 1

E = mcc.

E = mc².

E ╪  mc2.

Answer 2

it says that energy and mass are the same thing. it says that energy equals mass times the speed of light squared. the speed of light is a huge number, 300 million, and its even larger squared. what that means is that a small amount of mass can create a massive amount of energy.

the cool thing is that any reaction that gives off energy loses mass. so any time something gets hotter (absorbs energy), it gets more massive. any time something gets cooler (releases energy) it gets less massive.

theres really only one way i know to describe the truly massive amount of energy stored in mass. neither of the atomic bombs dropped on japan converted a gram of mass into energy. a piece of paper weighs anywhere between 60 to 120 grams. so each piece of paper contains the energy of more than 60 atomic bombs. thats crazy. you alone have enough energy stored in you to blow up the earth.

Answer 3

Actually it says one important thing: Energy and mass are equivalent. You can treat mass like energy (E=mc²) or energy like a mass (m = E/c²).

This relation is important for the development of nuclear energy: Atoms have an type of energy, which is used for keeping the small protons and neutrons together which form the atom core. This energy gets less, the closer the atomic mass approaches to the atomic mass of iron. lighter atoms like hydrogen have more binding energy, heavier like Uranium also.

Now, comes the trick with E=mc². By measuring the weight of atoms and comparing these measurements to the weight of a proton or a neutron, it got found out that atoms become lighter as the sum of all protons and neutrons. This comes from the change in energy... the more binding energy is inside the atom core, the more it weights.

From this knowledge it got found out that nuclear fusion will generate energy until you attempt to fuse something together past the atomic mass of iron. And that fission of atoms into atoms lighter than iron atoms will not create energy.

Answer 4

Einstein's famous equation e = m c^2 relates mass and energy.  It suggests that one can be converted to the other, and what you get when it happens. e is energy, m is mass, and c is the speed of light in a vacuum - a constant of nature. Energy is mass and mass is energy.  It's one thing with two behaviors.  It's famous because it has been proven, and it is counter intuitive.  Who'd a thunk it? Einstein must be really smart.

The Sun converts mass into energy through nuclear fusion.  For example, hydrogen atoms fuse, and the resulting atom weighs slightly less than the starting atoms.  Some mass was converted into energy.

Nuclear reactors convert mass into energy by splitting heavy atoms into smaller ones, with leftover mass coming out as energy (heat).

If you take a spring, and compress it, you are converting energy into mass.  The spring becomes slightly heavier!

Answer 5

this equation basically tells us that mass and energy are different forms of the same thing.

The energy (in joules) is the same as the mass (in kg) multiplied by the speed of light (300,000,000 meters per second) squared.

Answer 6

All it means is that a VERY SMALL bit of mass may be converted to a VERY LARGE amount of energy. Here's the man himself in case you don't believe me (and why should you;)

http://www.youtube.com/watch?v=QHJKx7VgN...

There are many ways that it can work. It's not so much a single specific process as it is a natural law. In stars we see it as fusion. Two hydrogen atoms (very small amount of mass) fuse together and as they do, a VERY LARGE amount of energy is generated. The C part of the equation is tje value for the speed of light. C is the fastest anything in our universe can go, so it's a very big number (around 300,000 kilometers per second ) I'm not sure what that number squared would be in math terms but it's said to be ".... almost 2 billion times the energy we obtained from the "ordinary" burning of 1 gallon of gasoline. (And we all know that is a huge amount of energy).

In english e=mc2 would read :

ENERGY EQUALS MASS TIMES THE SPEED OF LIGHT (C) SQUARED.

Answer 7

E= energy

M= Mass

C= The speed of light

I hope this helps

Answer 8

In physics, mass–energy equivalence is the concept that any mass has an associated energy and vice versa. In special relativity this relationship is expressed using the mass–energy equivalence formula  E = mc^2

Mass–energy equivalence says that when a body has a mass, it has a certain energy, even when it isn't moving. In Newtonian mechanics, a massive body at rest has no kinetic energy, and it may or may not have other (relatively small) amounts of internal stored energy such as chemical energy or thermal energy, in addition to any potential energy it may have from its position in a field of force. In Newtonian mechanics, none of these energies contributes to the mass.

In relativity, all the energy which moves along with a body adds up to the total energy of the body, which is proportional to the relativistic mass. Even a single photon traveling in empty space has a relativistic mass, which is its energy divided by c2. If a box of mirrors contains light, the mass of the box is increased by the energy of the light, since the total energy of the box is its mass.

One of Einstein's great insights was to realize that matter and energy are really different forms of the same thing. Matter can be turned into energy, and energy into matter.

Answer 9

I've heard that it has something to do with the speed of light, which travels at 186,000 miles per second. If we were to achieve that speed, then time would stop. If we were to exceed that speed, then time would start going in reverse.

Answer 10

this is saying you can turn mass into enery if the mass is going faster than the speed of light.