Last Day Paper 2 Flashcards
1
Q
Minimum energy for pair production
A
2mc squared ( m is mass of electron)
2
Q
4 fundamental forces by strength
A
Strong nuclear, electromagnetic, weak nuclear, gravitational
3
Q
When is the strong nuclear force repulsive?
A
below 0.5 fm
4
Q
When is the strong nuclear force attractive?
A
0.5 - 3 fm
5
Q
What do control rods do?
A
Absorb thermal neutrons to control rate of reaction
