Conversion constant from mass to energy

In summary, the conversion constant from mass to energy is known as the speed of light squared, denoted as c^2, with a value of approximately 9 x 10^16 m^2/s^2. It is derived from Einstein's famous equation E=mc^2 and explains the relationship between mass and energy. This concept has revolutionized physics and has practical applications in nuclear power plants and medical imaging. It remains constant throughout the universe due to the fundamental nature of the speed of light.
  • #1
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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  • #2
c2 is built into the constant you use.
 
  • #3
The rest energy is 938Mev
 

1. What is the conversion constant from mass to energy?

The conversion constant from mass to energy is known as the speed of light squared, denoted as c2. Its value is approximately 9 x 1016 m2/s2.

2. How is the conversion constant from mass to energy derived?

The conversion constant from mass to energy is derived from Einstein's famous equation, E=mc2, where E represents energy, m represents mass, and c represents the speed of light. By rearranging the equation, we get c2=E/m, which is the conversion constant.

3. What is the significance of the conversion constant from mass to energy?

The conversion constant from mass to energy is significant because it explains the relationship between mass and energy, which were previously thought to be separate entities. This concept has revolutionized the field of physics and has led to advancements in nuclear energy, nuclear weapons, and understanding of black holes.

4. How is the conversion constant from mass to energy used in practical applications?

The conversion constant from mass to energy is used in practical applications such as nuclear power plants, where the conversion of mass to energy is utilized to generate electricity. It is also used in medical imaging techniques like positron emission tomography (PET) scans, which rely on the conversion of mass to energy in the form of gamma rays.

5. Is the conversion constant from mass to energy constant throughout the universe?

Yes, the conversion constant from mass to energy is constant throughout the universe as the speed of light is a fundamental constant. This means that the relationship between mass and energy remains the same regardless of location or time.

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