E= Mc2 can you answer it?

Question

what does the E stand for and the M and C what do they stand for
I know do you?

Answer 1

energy=mass times the speed of light squared

speed of light is approximately 1860,000 miles per second or 10to the eighth meters per second squared.

and by the way einsteins theory of relativity is probably more than you know. it is way more than one sentence and way more than I'm willing to type.

Answer 2

Einstein's famous equation E=mc^2 (said E equals m c squared). Lets throw some unit analysis at it to see if it is a good equation. Using the m-g-s system of measurement, we can substitute for E (Energy) a Joule, a unit of energy, and in the m-g-s system, we can say that a joule is the force of 1 Newton acting over a distance of 1 meter, or simply N·m. Since a Newton can also be written as a kilogram·meter per second squared, we can express energy as kg·m^2/s^2. Then for m (mass) we can substitute kg. For c, the speed of light, we can substitute m/s (or meters per second, a measurement of speed). We end up with Einstein's equation rewritten like this:

E=mc^2
kg·m^2/s^2 = kg·m^2/s^2

This says that a kilogram meter squared per second squared is equal to a kilogram meter squared per second squared. You may say that this does not tell us anything, but it does tell us at least two things. One, Einstein's equation is correct according to a simple unit analysis, and two, you might be able to see that whatever the coefficinets are for the units on each side of the equal sign of the equation, that time, the second squared (s^2) part of the equation, will change per the mass changes (kg) or the distance changes (m).

Surely we have all heard of the atomic clock tests done at ultra high speeds where the stationary control clock gains a little time.

Now, having said all of that, certainly one can sense that time is not equal even to all humans, i.e., a youngster waiting 1/2 hour in front of a clock waiting before he can go swimming vs. a carpenter that is trying to install a front door before the owner shows up to inspect and pay for services rendered. The child's 1/2 hour seems very long indeed, and the hurried carpenter's 1/2 hour will be over in seconds.

One may argue that the mind has nothing to do with time, but nay, relativity is more than math.

Answer 3

The amount of energy E, contained in an atom with mass M is equal to the Mass of the atom multiplied by the speed of light c squared. So, a kilogram of hydrogen if reaching fusion will produce 89875517873681764 joules of Energy.

However, the problem comes if light speed is decreasing, which some scientific experiments have suggested...

Answer 4

E = Energy

M = Mass

c-squared = the speed of light squared (i.e. multiplied times itself)

(c=10 to the power 10 cm/ sec, or 186 thousand miles/sec)

but todays science tells that c is not constant. day by day its became slower. at early it ws faster.there r so mny star in the sky which we can see, placed in a big light years distance.calculation said said this big distance light can not travel within this time(light year). that means the speed of the light was heigher before. the research is going on. if it is became true then E= Mc2 will be false.

Answer 5

Energy, Mass, and the speed of light.

It's the degenerate case of a specific explanation of the relationship between mass and energy... in the real world, nothing will ever actually match this equation because it assumes too many unrealistic assumptions about how matter and energy interact... but in an ideal world, it shows, in theory, in what quantities mass and energy MAY be exchanged, if you can find a way to perform the actual exchange (and yes, the explosion of a nuclear weapon is a sample of how this can occur, but can you explain why it still fails to reach the "pristine level" of an actual E=mc^2 ratio?)

Answer 6

Einstein's equation states that the energy which would be released by the conversion of matter would be an incredibly large amount, hence Energy = Mass multiplied by the speed of light squared. That this was so was demonstrated with the splitting of atoms and the atomic bomb.

Answer 7

E stands for ENERGY and M stands for MASS and C2 stands for The CONSTANT which in this equation is the speed of light. So any form of mass moving at the speed of light will inevitably turn into a pure form of unharness-able energy.

Answer 8

E is energy is equal to M mass time the speed of light squared

Answer 9

Energy equals Mass times something squared???

Answer 10

energy equals the mass times the square of the speed of light

Answer 11

E = energy M = mass and C is a constant for the speed of light. basically its an equation for calculating how mass is converted into energy.