Phys 7B - Spring 2020

Announcements

  • Welcome to the webpage for discussion/lab sections 105 + 109!

  • Please fill out the introduction survey: Section 105, Section 109

General

GSI: Marcus Bintz, mbintz@berkeley.edu

Office hours: Tuesday + Thursday 10-11 AM, LC 107

Time + Location:

  • 105: 4-6 PM, Monday (LC 245, Lab) and Wednesday (LC 200, Discussion)
  • 109: 12-2 PM, Tuesday (LC 245, Lab) and Thursday (LC 226, Discussion)

Recommended textbook: “Physics” by Resnick, Halliday, Krane (5e has better problem layout than 4e, but both are good. NOTE: not “Fundamentals of Physics” by Halliday, Resnick, Walker)

7B course info: Course policies, syllabus, 7B section policy

The primary goal of the discussion sections is to develop your problem-solving skills, and each will be split roughly in half. In the first half I’ll walk through problems on the board, and possibly review material from lecture or present a different perspective on it. For the second half I’ll provide a set of problems you can work on in small groups, while I float around the classroom to help.

Section problems will be posted here at the start of the week, and their solutions at the end of the week. My go-to source of problems will be from the recommended textbook (“RHK”) – the difficulty is intended to be similar to what appears on the exams. I will upload recommended readings from the 5th edition of it (and maybe other sources) here as well.

Readings, problems, solutions

Week 1: Temperature and thermal expansion

Reading: RHK Chapter 21 21.1 - 21.4

Problems: Temperature and thermal expansionSolutions

Week 2: Ideal gases - equation of state, kinetic theory, work, internal energy

Reading: RHK Chapter 21 21.5, RHK Chapter 22 22.1 -22.4, RHK Chapter 23 23.5-23.6

Problems: Kinetic theorySolutions, Work and internal energySolutions

Week 3: Heat and the First Law

Reading: RHK Chapter 23, Notes

Problems: Heat

Week 4: Entropy and the Second Law

Lab 1: Heat engine (Monday / Tuesday)

Reading: RHK Chapter 24 24.1-24.8

Problems: EntropySolutions (1/2), Solutions (2/2)

Week 5: Electric charge and fields, review of thermodynamics

Problems: Point chargesSolutions

Week 6: Continuous charge distributions

Midterm 1: Monday Feb 24, 7-9 PM. I’ll do review on Thursday (Feb 20) for Section 109, and on Monday (Feb 24) for Section 105, each during the usual discussion time.

Problems: Continuous charge distributionsSolutions

Week 7: Gauss’ law and conductors

Problems: Gauss’ LawSolutions, Conductors

Week 8: Electric potential

Problems: Electric potentialSolutions

Week 9: Capacitance, DC circuits I

Notes: Capacitance, DC Circuits I

Problems: CapacitorsSolutions, DC Circuits I - Resistors and BatteriesSolutions

[SPRING BREAK]

Week 10: DC circuits II, review of electrostatics

Notes: DC Circuits II, MT2 Review

Problems: DC Circuits II - Capacitors

Week 11: RC circuits, magnetic force on particles

Midterm 2: Monday Apr 6. I’ll do review on Thursday (Apr 2) for Section 109, and on Monday (Apr 5) for Section 105, each during the usual discussion time.

Notes: RC Circuits, Magnetic force, Cyclotron motion via Newton’s laws

Problems: RC Circuits, Magnetic force,

Week 12: Wires and dipoles, Ampere’s law

Notes: Wires and dipoles, Ampere’s law

Problems: Wires and dipoles, Ampere’s law

Week 13: Biot-Savart law, Faraday’s law

Notes: [Biot-Savart[(../7B/notes/Biot-Savart.pdf)], Faraday’s law

Problems: Biot-Savart

Week 14: More induction, LR + LC Circuits