1. In 270 or perhaps intro-quantum you discover that the momentum operator can be represented in a one dimensional world as
Show that for the given a wave function
that this is an eigenfunction of the momentum operator. |

2. Construct
a spin 1/2 wavefunction as a column matrix. Use the
pauli spin matrices to define |

3. Consider
a hydrogen atom in its ground state so that the orbital angular momentum of
the composite system is Bring at least one question to class relating to the addition of spin. |