2006-06-07 07:12:55 · 30 answers · asked by CASABLANCA 1 in Science & Mathematics ➔ Mathematics
The energy contained with in an object of mass "m" is equal to that mass times the speed of light, squared.
Or Energy = mass X speed of light X speed of light
Einstein surprised the scientific world with this equation showing the equivalence of mass and energy. Because the speed of light is such a large number (299 792 458 m / s), much larger when it is squared (8.98755179 × 10^16 m^2/s^2), a very small amount of mass can yield a huge amount of energy. This is why nuclear reactions are so efficient - just a small amount of fissile material can power a city (or blow it up).
It wasn't until 37 years after Einstein first published this equation that it was shown experimentally. On December 2, 1942, man first initiated a self-sustaining nuclear chain reaction, and controlled it.
In 2005, the centennial of Einstein’s great year, a team made the most accurate test yet of his equation. They measured the tiny change in mass of radioactive atoms before and after the atoms emitted gamma-rays. And they measured the energy of the rays. The missing mass times c² equalled the energy of the rays to within 4 hundred-thousandths of one percent.)
2006-06-07 07:33:51 · answer #1 · answered by dougdell 4 · 2⤊ 0⤋
E = mc2
An equation derived by the twentieth-century physicist Albert Einstein, in which E represents units of energy, m represents units of mass, and c2 is the speed of light squared, or multiplied by itself
2006-06-08 02:00:29 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Its the Formula for Kinetic energy That is Engergy = Mass of the object multiplied by twice that is square of critical velocity In which the object is moving. That is E=MC2
2006-06-07 07:17:39 · answer #3 · answered by adcconline 2 · 0⤊ 0⤋
The deep connection Einstein discovered between energy and mass is expressed in the equation E=mc² .
Here E represents energy,
m represents mass,
and c² is a very large number, the square of the speed of light.
Conversion of energy into mass.
2006-06-07 07:16:54 · answer #4 · answered by Mintz 3 · 0⤊ 0⤋
Energy = Mass x Speed Squared
2006-06-07 07:16:00 · answer #5 · answered by _bianca; 2 · 0⤊ 0⤋
This is 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.
If you just want the actual conversions of the variables -
E represents energy, m represents mass, and c² is the square of the speed of light.
2006-06-07 07:19:18 · answer #6 · answered by texandiva2006 3 · 1⤊ 0⤋
The relationship between energy and mass is expressed in the equation E=mc² . Here E represents energy, m represents mass, and c² is a very large number, the square of the speed of light. It was given by Einstien.
2006-06-08 02:59:18 · answer #7 · answered by minakshi 2 · 0⤊ 0⤋
Energy = Mass times the speed of light squared. The energy released in a reaction is equal to the mass expended times the square of the speed of light
2006-06-07 07:15:00 · answer #8 · answered by davidmi711 7 · 0⤊ 0⤋
Energy = mass x (speed of light) x (speed of light)
Or
Energy equals mass times the speed of light squared
It's basically an equation regarding nuclear physics showing how mass can be converted into energy in a nuclear reaction. So given an object that weighs a certain amount you could figure out how much energy could be obtained from it in a nuclear reaction theoretically.
2006-06-07 07:18:23 · answer #9 · answered by devilishblueyes 7 · 0⤊ 0⤋
it's einstein equation about dual nature of light that end up the classical physics and started the modern physics as the other guys said energy=mass*speed of light in other words it means when a body travel with a speed equal to the speed of light it looses it's mass and become conversed to energy..which was made on electrons and photons
2006-06-07 07:17:54 · answer #10 · answered by Amigo 2 · 0⤊ 0⤋