how is mass and energy related to einstiens's E=MC2?

Question

its for my homework.. if you know please help.. thank you in advance..

Answer 1

Energy equals mass times the constant squared (E=MC2)
where energy (E) in ergs. Mass (M) in grams. Constant (C) is the speed of light in meters per second.

So mass is equal to energy regulated by space-time. As speed increases so does mass, mass can be converted to energy as in an a-bomb. Nothing can travel faster than light.

Einstein performed his calculations using the CGS measurement system (centimeters, grams, seconds, dynes, and ergs).

Answer 2

When a heavy atom like uranium splits (fission) or two light atoms combine to make one (fusion) there is a change (loss) of mass called a mass discrepancy. Although the loss is minuscule, it produces a relatively large amount of energy in accordance with Einstein's equation (mass discrepancy is multiplied by the square of the speed of light!). Far more energy is produced than by a chemical reaction such as burning coal where excess energy is given up (exothermic reaction) when oxygen atoms combine with a carbon atom to form CO2 (and only the electrons rather than the nuclei are involved in the reaction).

Answer 3

well, the equation itself means that mass and energy are in direct proportionality relationship. mass can be converted to energy and vice versa. moreover, a small amount of mass is actually equivalent to a large amount of energy because the proportionality constant, c^2 is the speed of light squared. since c = 3x10^8 m/s, 1 kg of mass is equivalent to 9 x 10^16 joules of energy!

Answer 4

energy = mass * speed of light ^ 2

This determines the total amount of energy that an amount of matter is comprised of. The only (currently known) way to convert matter directly to energy with 100% efficiency is in a matter-antimatter annihilation.

Answer 5

This is the energy released, in joules, in a nuclear reaction, where mass is lost and changed into energy. mass is in kilograms. speed of light in m/s.