Does E=MC2 work only in the Sun or in other examples of fission and fusion?

Question

Are there any instances of its operation in everyday life?

Answer 1

It works everywhere, but the mass equivalent of most forms of energy are trivial compared to the mass of an atomic nucleus. If you heat matter, the atoms move faster, but the energy change is trival compared to the mass of matter heated. Take 1kg of water from 0°C to 100°C: it requires 4.2 x 10^5 Joules. The energy in the mass of water is roughy 1kg x (3.0 x 10^8 m/s)² = 9.0 x 10^16 Joules. Heating water from the freezing point to the boiling point raises the mass-energy by less than 0.000000005%, far less than can be weighed effectively.

Answer 2

The equivalence of mass and energy works everywhere.

You do not need a change of state or reaction to show it, but it is most apparent when this happens.

What is means, of course, is that when a chemical reaction gives out heat, the end products have a tiny bit less mass. In a nuclear reaction, the same applies (and the change in mass is larger, so more energy is given out).

It also means a pan of hot water has a tiny bit more mass than a pan of cold - though you would be hard pressed to measure it.

Answer 3

The most effective way to benefit from E=MC2 is the Nuclear electricity generation plants. They say such plants power almost 20% of world's electricity systems.

Nuclear bombs (Hiroshima and Nagazaki) and all the fuss that is currently going in the world about Iran and North Korea is also based on Nuclear fission and fusion.

Nuclear power might be very usefull, but it is also very distructive. Chernobil is a good example about destructivness of such power.

Answer 4

this equation applies to all the universe, not only the sun. If you get hold of a particles accelerator you may see the phenomenon of matter transforming into particles, but you cannot see the application of the equation in your everyday life because you would need to accelerate mass (m) at the speed of light to the 2nd power (c2) to produce energy

Answer 5

It works in every case .In everyday the base of life:energy coming from the sun.In science you find the particle accelerators.

Answer 6

e=mc^2 works for everything. All energy has mass, and all mass has energy. If you remove energy from an object (e.g. cool it down) it will have less mass, and vice versa. For ordinary objects the amount is so small as to be immeasurable, so we don't notice it.

Answer 7

this equation was abused when many people used it for bombs.

Answer 8

it works for everything! :D