What does E=mc squared mean?
447577
enery equals mass times the speed of light squared
545787
E = mC^2. Therefore, Energy
517927
Well E=mc^2 that give us\n\nm = E/c^2\n\nm = 9.6/16 *  10^ 15-14\nm = 0.6 * 10 = 6.0
140934
Energy = mass times the speed of light squared\n\nIt conveys that a very small amount of matter actually represents/can be turned into a very large amount of energy, as in nuclear power, or a nuclear explosion.
863606
E indicates that the precedding number is multiplied by 10 and then the result to the next number in power. \n\nYour example: \n6E15 can be also expressed as\n6X10^15\nor 60,000,000,000,000,000\n\nyou already know 6X10 is 60, so you take that amount and add the next number in zeros to make the expresion in standard form.\n\nSo: 6E15 is the scientific form of 60,000,000,000,000,000
294096
The theoretical physics equation E = mc2 states a relationship between energy (E) and mass (m) first formulated by Albert Einstein in his 1905 paper "Ist die Trägheit eines Körpers von seinem Energieinhalt abhängig?" ("Does the Inertia of a Body Depend Upon Its Energy Content?", published in Annalen der Physik on September 27), one of the articles now known as his Annus Mirabilis Papers. \n\nIn the context of special relativity theory, the implication is that energy and mass are, in some sense, equivalent. In practical terms, it led to the atomic bomb. It is one of the best-known equations of all time. Even those who may not explicitly know what it means may have some idea of its meaning through culture. Background and consequencesThe equation resulted from Albert Einstein's inquiry into the dependence of mass on its energy content. The famous result of this inquiry is that the mass of a body is actually a measure of its energy content. To understand the significance of this relationship, compare the electromagnetic force with the gravitational force. In electromagnetism, energy is contained in the fields (electric and magnetic) associated with the force and not in the charges. In gravitation, the energy is contained in the matter itself. It is not a coincidence that mass bends spacetime, while the charges of the other three fundamental forces do not. \n\nRest energy = mass X (speed of light)2\n\n\nAccording to the equation, the total amount of energy obtainable from an object is equivalent to the mass of the object multiplied by the square of the speed of light. \n\nThis equation was crucial in the development of the atomic bomb. By measuring the mass of different atomic nuclei and comparing that number with the mass of the individual protons and neutrons, one can obtain an estimate of the binding energy available within an atomic nucleus. This not only showed that it was possible to release energy by fusion of light nuclei or fission of heavy nuclei, but also to estimate the amount of energy which can be released. \n\nIt is a little known piece of trivia that Einstein originally wrote the equation in the form m = L/c² (with an "L", instead of an "E", representing energy). \n\nA kilogram of mass completely converts into \n89,875,517,873,681,764 joules or \n24,965,421,632 kilowatt-hours or \n21.48076431 megatons of TNT \napproximately 0.0851900643 Quads (quadrillion British thermal units) \n\n\nIt is important to note that practical conversions of mass to energy are seldom 100 percent efficient. One theoretically perfect conversion would result from a collision of matter and antimatter; for most cases, byproducts are produced instead of energy, and therefore very little mass is actually converted. In the equation, mass is energy, but for the sake of clarity, the word converted is used. \n\nAccording to Umberto Bartocci (University of Perugia historian of mathematics), the equation was first published two years earlier by Olinto De Pretto, an industrialist from Vicenza, Italy, though this is not generally regarded as true or important by mainstream historians. Even if De Pretto introduced the formula, it was Einstein who connected it with the theory of relativity. Applicability of the equation E=mc² applies to all objects with mass, as it is a statement that mass is energy. Its applicability to moving objects depends on the definition of mass used in the equation.
249306
Ask Einstein, the famous E=mc2 formula directly relates to your question.
581568
I think your question is wrong.\n\n_\n&#92; MR^2 = Moment of Inertia (I)\n/_\n\nwhere M is the mass of a particle, R is the distance of that particle from the axis of rotation.       \nThe sign before MR^2 means sum, indicating that the quantity MR^2 is to be computed for each particle making up the body, and the results added.
154286
Hound, did you intend this:\nE=Ea+Eb = (m^2) * (c^4) + (p^2) * (c^2)\nThis makes E = Ea^2 + Eb^2, no?\n\nAlso, an alternate, simple-minded, non-relativistic answer to why does KE = .5MV^2:\nE=F*D (Energy, Force, Distance)\nF=M*A (M is Mass, A is Acceleration)\nE=M*A*D \nD=.5*A*T^2 (T is time)\nV=A*T\nE=M*A*.5*A*(V/A)^2=.5*M*V^2
1168590
Let's look at E = mc^2.\n\nE is energy. It is measured in joules.\nm is mass. It is measured in kilograms.\nc is the speed of light. It is measured in meters per second.\n\nKilograms multiplied by (meters per second)squared are joules. If you don't have a mass multiplied by the square of a velocity (or something with equivalent units), you don't have energy.\n\nThe maximum speed any mass can have is infinitesimally less than the speed of light. c^2 would be the square of that speed.\n\nNow, let's consider the practicalities. Experimentally, we find that, as we accelerate something very close to the speed of light (which is done every day in particle accelerators, for example), it becomes harder and harder to accelerate the closer it gets to the speed of light. E = mc^2 is the energy of a mass at rest; this is where the energy of nuclear weapons and nuclear power plants comes from. As an object moves, its energy is multiplied by a factor usually abbreviated with the Greek letter gamma; its value is:\n\ngamma = 1/[1 - (v/c)^2]^1/2\n\nSo it's 1 over the square root of [1 minus (v/c)squared].\n\nAs v becomes closer and closer to the speed of light, v/c becomes closer and closer to 1, the denominator of the fraction becomes closer and closer to zero, and gamma becomes larger and larger. If v were to equal c, gamma would be infinite. This is why you can't accelerate any massive object to the speed of light - it would take an infinite amount of energy. \n\nSo, you may ask, what about photons? They go at the speed of light, don't they? Indeed they do. They manage this because their mass is zero, and they can never travel at any speed other than the speed of light.\n\nIncidentally, it is indeed true that m = E/c^2; this is often useful in physics calculations.
195947
In Einstein's equation E=mc^2, E stands for energy, m is mass, and c is the speed of light. This theory of relativity helps to explain how we get energy from nuclear reactions, as the mass of atoms and particles themselves are converted into energy.
748491
E = mc2 is an important and well-known equation, which states an equivalence between energy (E) and mass (m), in direct proportion to the square of the speed of light in a vacuum (c2).
618887
By relativity, E = Mc2\n\nIf E = 4 X 10^6 J, then....\n\n4 X 10^6 / c^2 = 4.45 X 10^ -11 kg\n\nWhere C = 299,792,458 m/s
432860
E is for Engergy\nM is for mass\nC is the speed of light in a vacuum\n2 means "squared" or multiplied by itself
1165749
This formula, E=MC2, discovered by Albert Einstein, proposes that when a body has a mass (measured at rest), it has a certain (very large) amount of energy associated with this mass which is given by E=mc2
342507
E=mc^2 is a version of Einstein's famous Relativity equation. Specifically, it means that Energy is equal to Mass times the speed of light squared. In essence, it states that there is an equivalence between mass and energy. This simple statement has many profound implications... such as no object with mass can ever go faster than the speed of light!\n\nThe Energy:\nEnergy is measured in joules (J). How much energy is one joule? Not very much really. If you pick up a large apple and raise it above your head you will have used around one joule of energy in the process. On the other hand we use up huge amounts of energy every time we switch on a light. A 100 watt light bulb uses 100 joules of energy every second, i.e. one watt is one joule per second.\n\nThe Mass :\nMass is a measure of a body�s resistance to acceleration. The greater the mass the greater the resistance to acceleration, as anyone who has ever tried to push a heavy object knows. For our purposes here, we can also think of mass as the amount of matter in an object. Mass is measured in kilograms (kg), 1 kg is about the same as 2.2 pounds. Note that we haven�t said what the mass is composed of. In fact it could be anything. It doesn�t matter if we use iron, plastic, wood, rock or gravy. The equation tells us that whatever the mass is it can be turned into energy (whether it is practical to actually do so is another matter and will be dealt with in later pages in this series).\n\nThe speed of light:\nThe speed of light is close to 186,300 miles per second (300,000 km per second). In order to make the equation "work" we need to convert these numbers into units that are more suited to our purposes. In physics, speeds are measured in metres per second. This is usually abbreviated to ms-1; that is "metres times seconds to the minus one". Don�t worry if you don�t understand this notation. We could equally write m/s but using ms-1 makes the mathematics easier in the long run. Likewise, we could either say that the speed of light is 300,000,000 metres per second, or, as is more usual, express the same figure in scientific notation: 3 � 10^8 ms-1.\n I think the mass is dont increase the enrgy is relative with light speed and the mass is constant\nE=constant*C^2\n\nFor a long time the concept of "mass" had been like the concept of energy before the 19th century. There were a lot of different material substances around, but it was not clear how they related to each other, if at all.\n\nAntoine-Laurent Lavoisier, as much as anyone else, first showed that all the seemingly diverse bits of tree and rock and iron on Earth�all the "mass" there is�really were parts of a single connected whole. Through decades of meticulous experiments, aided by his able wife Marie Anne, Lavoisier proved that the substances that fill our universe can be burned, squeezed, shredded, or hammered to bits, but they won't disappear. The different sorts floating around just combine or recombine. The total amount of mass, however, remains the same. This principle�the law of conservation of mass�was one of the great scientific achievements of the 1700s.
114259
In short, yes. But E=mc^2, is so much deeper than chemical reactions. Actually, it relates mass to energy. It lead to the concept of nuclear fission. It says that if you have a small amount mass, say 30 AMUs, and you multiply that by the speed of light squared, you will get a TREMENDOUS AMOUNT OF ENERGY. It was derived in Einstein's paper on relativity in 1905.