Conservation Of Mass-Energy Flashcards
1
Q
Two concept that form the special theory of relativity
A
- The transformation of matter into energy and vice versa
- The adjustment that must be made to a particle’s apparent mass when the particle’s speed approaches light.
2
Q
Kinetic Energy of a particle
A
Total energy minus its rest mass energy
3
Q
Photons travel at the ____________ and possess a __________ rest mass.
A
Speed of light
Zero
4
Q
When do we see an 0.1% increase in mass for the following:
- Electrons
- Neutrons
- Alphas
A
- 0.5 KeV
- 1 MeV
- 4 MeV
5
Q
Neutron Wavelength ____________ as they lose energy
A
Increases
6
Q
Pair Production
A
Electron-positron pair
7
Q
What most occur for pair production to occur?
A
A photon of twice the rest mass energy of an electron (0.511MeV) must be converted. The minimum energy it overcomes is termed the threshold energy.
8
Q
Pair annihilation
A
When a position and electron collide releasing two 511kev gamma rays
