PHYSICS 226, Physics II, Instructor: Postma

THE POSTMA PHILOSOPHY

UPDATES

COURSE DESCRIPTION

This is a calculus-based introduction to Electricity and Magnetism and Optics. PHYS 225 and MATH 150B are prerequisites. MATH 250 is a recommended co-requisite and/or preparatory. It is recommended that you take the lab (PHYS 220BL) concurrently with this course.

TENTATIVE CLASS SCHEDULE

CSUN's Academic Calendar is here.

Below is a public google calendar that is easy to integrate in your own calendar so you will get class changes pushed to your calendar automatically. Use

TEXTBOOK

To save you all from having to shell out over $300 for this basic physics course in material that has not been updated for over a century (Pet peeve alert), I have undertaken the monumental task of writing a text book just for you. It will be posted here on this page. As this is a work in progress, your comments, spotted typos and mistakes are highly appreciated.

DATE/TIME/PLACE

TIMENAMEPLACECOURSE ID
MW 13:00-14:50pmPHYS 226Live Oak Hall 112415885

INSTRUCTOR

Dr. Henk Postma,
webpage www.csun.edu/~hpostma
email: postma@csun.edu
phone 1 818 677 6152.

OFFICE HOURS

MW noon to 1pm, in Office Live Oak 1112, or Lab in EH 2023/2026. If you have classes at that time, feel free to email or phone me to make an appointment.

EMAIL POLICY

Although you can expect a reply to an email sooner than that, I am committed to replying within 36 hours to your email, +24h per saturday/sunday/holiday.

ADDING CLASSES, HOMEWORK REGISTRATION and CREDIT LOCKOUT

If I have issued you a permission number, please enroll asap.

TESTS

You can expect the following tests:

  • Two 'midterm' exams, covering parts of the material
  • A comprehensive final exam
  • Homework, to be announced at least a week before it's due
  • Quizzes, for extra credit, testing you on preparatory material before the final and midterm reviews

Test instructions:

  • The tests consist of 3 questions with subquestions and a fourth bonus question. None of the questions are multiple choice.
  • You can use any calculator you want
  • Turn off your cell phone, do not put it on vibrate. If your phone so much as buzzes, or I catch you looking at it, you are considered cheating.
  • You are allowed to make a formula sheet. For the 'midterm' exams: Take half a letter-size (8.5 x 5.5 inches) piece of paper, hand write (no computer) any equations, diagrams, text you want on both sides. For the final: use both sides of a letter-size piece of paper. If your sheet of paper is larger than allowed, I will come with a pair of scissors, cut it in two, and choose which half you can keep.
  • You get the regular lecture length for the 'midterm' exams, and 2 hours for the final.
  • There is a zero tolerance policy for cheating.

GRADING

Scores and grades can be contested up to 10 days after they have been published, afterwards they become final.

The following contributes to your class grade

Roll-over points: Unused percentage points from the E1, E2, Homework, roll over and add to the weight of the final.

Take the following example, illustrated in the table below. You scored 100% on your homework, earning 10% towards your class grade. You scored 60% on your first exam, earning 25% x 60% = 15% towards your class grade. You scored 80% on the second exam, earning 80% x 25% = 20% towards your class grade. Because you got less than 100% on the two exams, you have not used 15%. Ordinarily, these points are lost, and the highest grade you can get is 10%+15%+20%+40%=85%, if you get 100% on your final. I have decided to add those unused percentage points to the weight of the final. Instead of 40%, the final is therefore worth 55%, and you can still get a straight 100%. If you score 82% on the final, you earn 82% x 55% = 45%. This way you get 90% for the class without quizzes.

So

  1. Your grade before the final is Y = 0.10 H + 0.25 E1 + 0.25 E1
  2. The weight of the final is 1 - Y
  3. Your class grade before quiz bonus is therefore G = F (1 - Y) + Y

Now assuming you got 100% on the quizzes, that means that your class grade will be at the 90% fraction between 20% and 100%, i.e. 0.20 + 0.80 x 0.90 = 92 %.

MaximumBefore Final
Unused % are
added to 40%
Final is worth 55%grade before quizgrade after quiz
510% Homework100%HWHW
Class Score=90%
before bonus
Grade = 92% after bonus
10
1525% Exam 160%Exam 1Exam 1
20
25
30UnusedExam 2Exam 2
35
4025% Exam 280%
45
50UnusedFinal 82%
55
60UnusedUnused
6540%(minimum) Final40%
70
75
80
85
90
95
100

I may curve the grade up, depending on the outcome of the tests

The letter for your class grade G' will be determined from the table below. +/- grading will be applied for grades A through D, where - indicates the lower 4% of the grade scale, and the + the higher 4%. An A+ is not given, so the whole scale is

LetterG' between
A in [90%, 100%]
A- in [86%, 90%>
B+ in [82%, 86%>
B in [76%, 82%>
B- in [72%, 76%>
C+ in [68%, 72%>
C in [62%, 68%>
C- in [58%, 62%>
D+ in [54%, 58%>
D in [48%, 54%>
D- in [44%, 48%>
F in [0, 44%>

HOMEWORK and EXAMS

All homework announcements will be done on this page, at the top in the Updates section. Homework is due before the lecture starts on the due date.

© Copyright 2008-2013, Henk Postma, CSU Northridge