Conversion constant from mass to energy

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SUMMARY

The conversion constant from mass to energy is derived from Einstein's equation E=mc², where the rest mass of a proton is 938 MeV/c². To convert MeV to Joules, the factor of 1.6 x 10^-13 Joules per MeV is used. The c² term is inherently included in the conversion factor, allowing for the direct calculation of energy without explicitly multiplying by c². Thus, the rest energy of the proton can be calculated simply as 938 MeV.

PREREQUISITES
  • Understanding of Einstein's mass-energy equivalence principle
  • Familiarity with the concept of MeV (mega-electronvolts)
  • Knowledge of unit conversion between MeV and Joules
  • Basic grasp of particle physics, specifically regarding protons
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  • Study the derivation of Einstein's equation E=mc²
  • Learn about unit conversions in particle physics, focusing on MeV to Joules
  • Explore the implications of mass-energy equivalence in nuclear reactions
  • Investigate the properties of protons and their role in atomic structure
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Students of physics, educators teaching particle physics, and anyone interested in the principles of energy conversion in nuclear processes.

huey910
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I was told at school that if we want to calculate the rest energy of the proton, we multiply its rest mass = 938 MeVc^-2 by a factor of 1.6*10^-13. However, doesn't this convert MeV to Joules only? What about the c^2? Please explain why we can omit it in our calculations. Thank you!
 
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c2 is built into the constant you use.
 
The rest energy is 938Mev
 

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