1 Introduction to Physics 260 Dr. Phil Womble Applied Physics Institute Office Hours: MWF 8-5, TR 1-5 API

2 Are you in the right place? This is University Physics II Pre-requisites: Physics 250 and Math 126 Co-requisites: Math 227

3 What is different than Physics 250? More Mathematically based By that, I mean calculus Some concepts are difficult to visualize What is a “field”? No, it is not a place to put cattle. Some say 260 is much harder than 250 In a way, this is true In a way, this is false

4 Syllabus Contact Info: Dr. Phil Womble I travel A LOT! is the best way to find me. I usually don’t read my at home so usually after 5 pm is not answered until the following morning. Particularly on Homework Night! You are always welcome to come out to the API and ask questions.

5 Overall Goals University Physics II is an introduction to Electricity & Magnetism for students in the civil and mechanical engineering degree programs. The emphasis will be on developing problem solving skills and understanding the basic concepts and definitions used in the study and application of Electricity & Magnetism. Also an understanding that these concepts are not independent of other fields of physics but part of the larger picture of physics will be emphasized. Finally, we wish to give the student confidence to tackle simple wiring problems in their home and their work environments. Of course, we will not be held liable for any fires, deaths, and general mayhem which may result

6 Grade Weighting Factors 3 In-class exams are worth 60% (20% each) Final Exam is worth 30% Homework is worth 10%

7 3 In-class Exams Each worth 20% of your final grade Usually, 5 problems long. I supply all the formulae that you need (and some that you don’t need) 30 minutes of the class period before an exam is dedicated to test review I hand out old exams for you to review These “practice” exams are examples of problems and problem-types that I have previously given. Do not expect a problem to be repeated in its entirety from a practice exam.

8 Exams Cont’d Exams consist of 80% of homework/class examples Again, these are not exact copies but very close 20% of the material is based on classwork/homework but will be an entirely new situation I call it “the joker problem”

9 Exam Schedule (tentative) Tuesday, Feb 14th Thursday, Mar 4 th Thursday, April 10 th

10 “The More Work Shown, The More Credit Given” This phrase is repeated at the beginning of EVERY test It means that I grade on your problem- solving capabilities not an answer. I could care less if you ever got a correct answer in this class. BUT YOUR PROBLEM-SOLVING TECHNIQUE SHOULD BE GOOD!

11 Final Exam Essentially a two-hour in-class exam We will review during the final class period Consists of 10 questions Comprehensive!

12 Final Exam Schedule TR 8:00-9:20 Tuesday, May 6th, 8:00-10:00 am

13 How to Write Up a Physics Problem for Tests Draw a diagram (if possible) Label all forces, angles, etc. Assign variables to the problem Don’t just use math, write what is going on in your mind. Define what you need to find Define what initial values you have If nothing else, perform dimensional analysis i.e look at the units!

14 STEP ZERO: Convert to SI units Why? Fundamental electrical units such as volt, amp, ohm, and farad (among others) are SI units. Our equations are set up to give us SI units If you see 4  0 then or just  0 /4 , then the equation is set up for SI units So your first step is always to convert to SI units!

Homework Homework is a group of PDF files on the server You must print out the pages, perform your work within the allotted space. Answers must be neat! I have instructed my grader to not give credit if they do not understand a solution. The burden of proof that you have solved the homework correctly lies on you! 15

16 HW Due Dates HW Due Dates have a tendency to “slide back” but never “forward”.

17 Collaboration is more than Copying As adults, you are on your honor to ensure that you do not copy your homework There will be no one to copy from on a test. Therefore it is in your best interest to understand the homework. It is in your best interest to be selfish. It is in your best interest to help your classmates No one really knows a subject until they explain it to someone else.

18 Attendance I don’t have an attendance policy YOU are responsible for everything that I say in class I have a tendency to ad-lib from these notes and these “ad-libs” may also be on the exams. These notes will be placed on the Physics 260 server (under “Course Info” on the Physics website)