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ChemGuy
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I thought I read something that said is was only a close approximation. If you did the full treatment you had to make a couple of assumptions to get it to that form. Does anyone know if that is correct?
Jheriko said:The equation E=mc^2 only applies for a theoretical particle at rest (p=0) so although the relation is precise for a theoretical object, it is only approximately satisfied in nature where everything is in motion.
rbj said:or the mass of a particle as observed in any inertial reference frame, then "E" is the total energy of that particle
Darryl said:have read in these forums, (somewehre) that within maxwels equations there are 2 constants that allow you to calculate the speed of light..
q. do any of these two constants required prior knowledge of the speed of light to derive ?
or does maxwell equations independently derive the speed of light ?
You can take permability of vacuum is:[tex]\mu_0=4\pi 10^{-7} N/A^2[/tex] is an exact value (set per definition).selfAdjoint said:So these two numbers, which have no obvious connection to speed, determine the speed of electromagnetic waves though space. And of course light is such a wave, in Maxwell's. When you measure these two constants and divide one value by the other, whatt do you get? Ta DA! you get c! ~300,00 km/sec.
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E stands for energy in the equation E=mc^2. It represents the amount of energy that an object possesses due to its mass.
No, E only equals mc^2 in the special case when an object is at rest. In other situations, such as when an object is moving, the full equation is E^2=(mc^2)^2+(pc)^2, where p represents momentum.
The speed of light, represented by c, is a fundamental constant in the universe. It is the maximum speed at which anything can travel and plays a crucial role in the relationship between mass and energy in the equation E=mc^2.
No, while E=mc^2 does demonstrate the conversion of mass into energy, it is a specific equation derived from Einstein's theory of special relativity. The law of conservation of energy is a broader principle that states energy cannot be created or destroyed, only transformed from one form to another.
Yes, E=mc^2 can be used to calculate the energy of any object or system, as long as the mass is known. This equation has been used in a wide range of fields, from nuclear energy to astrophysics, to calculate the energy released or required for certain processes.