Physics 330, Spring 2009
Practice Exam 1
1. Problem 1 (30 points) A photon with energy E = 4me c2 interacts with a very heavy atom. A
positron, electron pair is created. What is the energy and momentum of the electron and positron if
they have the same na
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Physics 330, Spring 2009
Exam 1
1. Problem 1 (30 points) Consider a system of two particles, each with mass m. In one reference
frame, one particle is at rest and the other moves directly towards the rst with a velocity v , where v
is a signicant fraction
Physics 330, Spring 2009
Final Exam
100 points
1. Problem 1 (20 points) Sodium (Na) has Z = 11.
(a) (5 pts) Write the electron conguration of the ground state.
(b) (5 pts) Estimate the ionization energy. Write your answer in terms of fundamental constants