Physics 421: Homework Assignments
HW # 
Chapter 
Problems 
Date due 
1 
Griffiths: 1, 2 
give a final interpretation/discussion at the end of each problem (remember, it counts for 30% of homework points) 
fri, sept 15 
2 
Griffiths: 2 
give a final interpretation/discussion at the end of each problem 2.3, 2.5abe, discuss the difference in the physics (e.g. in psi^2 and <x>) when a particle is in a stationary state versus a superposition state 2.8, 2.10ab, 2.12 
fri, sept 22 
3 
Griffiths: 2 
give a final interpretation/discussion at the end of each problem 2.21abc, 2.22, 2.29, 2.33 (do the case: E=V_0) 
fri, sept 29 
4 
Griffiths: 2, 3 appendix 
give a final interpretation/discussion at the end of each problem 2.27 (hint: V symmetric, transcendental equation) 2.41 hint: very short A.9bd A.25 3.4, 3.9 1) scattering: describe (with reasoning) your observations as you vary parameters for the well/barrier; consider plane wave vs wave packet https://phet.colorado.edu/sims/cheerpj/quantumtunneling/latest/quantumtunneling.html?simulation=quantumtunneling 
fri, oct 6 


No HW this week, prepare for exam: fri oct 13 

5 
Griffiths: 3, 4

give a final interpretation/discussion at the end of each problem 3.5a, 3.14, 3.15, 3.18 4.1 (fine to just explore representative cases) 
fri, oct 20 
6 
Griffiths: 4 
give a final interpretation/discussion at the end of each problem 4.11, 4.15a, 4.16, 4.19a, 4.22 a(pick 3 cases) and b, 4.28 
fri, oct,27 
7 
Griffiths: 4 
give a final interpretation/discussion at the end of each problem 4.21, 4.25ab, 4.30, 4.32, 4.34, 4.64ad 
fri, nov 3 
8 
Griffiths: 4, 7 
give a final interpretation/discussion at the end of each problem 4.35, 4.36, 4.37ab, 4.38, 4.58, 7.1, 
fri, nov 10 


No HW this week, prepare for exam: fri nov 17 

9 
Griffiths: 7, 5 
give a final interpretation/discussion at the end of each problem 7.6, 7.11, and Fine structure corrections: determine Hydrogen’s energy spectrum E_nj for n=2 and n=3 5.4, 5.5, 5.8 
WED nov 29 
10 
Griffiths: 5, 11 
give a final interpretation/discussion at the end of each problem 5.9a, 11.2, 11.6 and question psi_nlm 
WED, dec 6 


FINAL: Wednesday DEC 13, 10:1512 :15 
