Rest Energy - Kinetic Energy

In summary, the conversation discusses a particle with a mass of 400 MeV/C2 and 200 MeV of kinetic energy. The question is raised about the total energy of the particle, with two possible options of 600 MeV or 200 MeV. The participants consider what would need to be done to the particle to give it 200 MeV of kinetic energy, concluding that it would require setting it in motion and adding energy to the particle.
  • #1
orangepeelsnice
7
0
We are giving a particle with mass 400 Mev/C2 and 200 MeV KE.

What is the Energy of the particle?

Is it 600 MeV or 200 MeV?
 
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  • #2
orangepeelsnice said:
What is the Energy of the particle?

Consider what you would have to do to the particle, starting from rest (i.e., total energy equal to its rest energy of 400 MeV), to give it 200 MeV of kinetic energy. You would have to set it in motion. Would that be adding energy to the particle, or taking energy away from it?
 
  • #3
the obvious answer is to say it the E = Eo+KE = 600 MeV, just making sure
 
  • #4
orangepeelsnice said:
the obvious answer is to say it the E = Eo+KE = 600 MeV

Yes.
 

Related to Rest Energy - Kinetic Energy

1. What is rest energy?

Rest energy is the energy an object possesses due to its mass, according to Einstein's famous equation, E=mc². It is the minimum amount of energy required to keep an object at rest.

2. How does rest energy differ from kinetic energy?

Rest energy is the energy an object has at rest, while kinetic energy is the energy an object has due to its motion. Rest energy is constant, while kinetic energy can vary depending on an object's speed.

3. Can rest energy be converted into kinetic energy?

Yes, rest energy can be converted into kinetic energy. This is known as the mass-energy equivalence principle, where a small amount of rest energy can produce a large amount of kinetic energy.

4. What is the relationship between rest energy and nuclear reactions?

Nuclear reactions involve the conversion of mass into energy. This means that rest energy plays a crucial role in nuclear reactions, as it is the energy that is released when mass is converted.

5. How does rest energy impact our daily lives?

Rest energy may seem like a concept that only applies to physics, but it has practical applications in our daily lives. It is used in medical imaging technologies such as PET scans and in nuclear power plants to generate electricity.

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