# PHYS 3220 - Physics for Scientists II (Honors) - Fall 2017

## Weekly Homework

Weekly Homework is homework in addition to the Class-to-Class Homework. It is due every week at the beginning of the Friday class (except for the first week, Fall Break and Thanksgiving Break). You must turn in two or more "exercises" from each textbook chapter. You can choose which exercises to turn in from the collection in the textbook, with two restrictions: (a) they must not have been assigned in the Class-to-Class Homework or Exams, and (b) their level of difficulty must be two or three stars (for optics, you can choose from the list of acceptable problems in Fowles at the bottom of this page). A list of recommended exercises is provided below.

### Recommended exercises.

• WH01 (Ch. 1), due September 1: 1.38 (Oscillating on a line), 1.43 (Potential energy in a three-dimensional crystal), 1.67 (Field from a cylindrical shell, right and wrong), 1.78 (Hole in a shell).
• WH02 (Ch. 2), due September 8: 2.46 (Right triangle ϕ), 2.62 (Square quadrupole), 2.64 (Field lines near the equilibrium point), 2.70 (Triangular E), 2.78 (Divergence of the curl).
• WH03 (Ch. 3), due September 15: 3.44 (Force on a charge between two planes), 3.56 (Field just outside a capacitor), 3.58 (Capacitor paradox), 3.64 (Capacitance-coefficient symmetry), 3.76 (The relaxation method).
• WH04 (Ch. 4), due September 22: 4.22 (Transatlantic telegraphic cable), 4.34 (Effective resistances in lattices), 4.45 (Battery/resistor loop), 4.48 (Charging a capacitor).
• WH05 (Ch. 10.1-10.12), due September 29: 10.16 (Leyden jar), 10.18 (Partially filled capacitors), 10.27 (Pascal's triangle and the multipole expansion), 10.31 (Mutually induced dipoles).
• WH06 (Ch. 5, App. G), due October 6: 5.15 (Gauss's law for a moving charge), 5.19 (Colliding particles), 5.20 (Relating the angles), 5.23 (Two views of an oscilloscope).
• WH07 (Ch. 6), due October 20: 6.29 (Motion in a B field), 6.43 (Vector potential inside a wire), 6.59 (Field at the tip of a cone), 6.66 (Fields in a new frame).
• WH08 (Ch. 7), due October 27: 7.26 (Sliding bar), 7.27 (Ring in a solenoid), 7.32 (Emfs and voltmeters), 7.37 (Flux through two rings).
• WH09 (Ch. 8), due November 3: 8.19 (Decaying signal), 8.27 (RLC parallel circuit), 8.34 (LC chain), 8.38 (Two resistors and a capacitor).
• WH10 (Ch. 11), due November 10 [WH10 is canceled: no WH the week an exam is due]: 11.16 (Dipole in a uniform field), 11.18 (Field somewhat close to a solenoid), 11.19 (Using reciprocity), 11.22 (Potential momentum).
• WH11 (Ch. 9, Fowles Ch. 1.1-1.4, Fowles Ch. 2.1-2.4), due November 17: 9.26 (An electromagnetic wave), 9.30 (Comparing the energy densities), Fowles 1.5 (Laser light in water), Fowles 2.2 (Electric field emitted by a light bulb).   —   To be clear, the pool of exercises belonging to WH11 is Exercises 9.13-9.32 in Purcell and Morin, Problems 1.1-1.5 and 2.1-2.6 in Fowles.
• WH12 (Fowles Ch. 2.6-2.8, 3.1-3.3, 10.1-10.2), due December 1: Fowles 2.16 (Reflectance at 45°), Fowles 3.3 (Covering one of two slits with glass). Fowles 10.1 (Derive the thin lens equation geometrically).   —   To be clear, the pool of exercises belonging to WH12 is Problems 2.14-2.17, 2.20, 2.23, 3.1-3.6, 10.1-10.3 in Fowles.

### Acceptable problems in Fowles.

• Fowles Problems 1.1-1.5, 2.1-2.6, 2.14-2.17, 2.20, 2.23, 3.1-3.6, 5.1-5.14, 10.1-10.3, if not already assigned in Class-to-Class Homework or Exams.