PHYS 1220/1320: Physics II –E&M and Thermodynamics General Information Instructor: R. Michalak, TAs: N/A Office 215 PS E-mail rudim@uwyo.edu Office hours (RM): W4pm, F11am, F4pm or via email or by appointment Expect that email inquiries may not be answered before the following day. On exam days I hold office hour from 9-12. This course fulfils university program requirement USP03 ‘SP’ and USP2015 ‘PN’ for 4 credit hours Lecture: MTR 12:10 to 2:00 Laboratory & discussion: WF 12:10 to 2:00 Text: PS239 PS133 Sears & Zemansky’s University Physics, 13th edition by Young&Freedman (older editions may vary substantially! second hand books often come with expired homework key) MasteringPhysics : www.masteringphysics.com use picture link for 13th ed Go to University of Wyoming and choose class RM1220SUM15 Webpage: You will find lecture templates and other course related information on my website www.physics.uwyo.edu/~rudim Supplementary Reading Suggestions: On your request I am happy to name some useful texts, which adopt different teaching approaches than Young Friedman. Course Content and Course Pre-Requisites: This course is an introduction to the physical phenomena of temperature and electric charge. We will approach the material from theoretical and applied angles. Our course is part of the suite of experimental physics courses. Consequently, significant emphasis is put on developing laboratory skills. Most physics courses differ from engineering courses in that we pay much more attention to where laws and equations come from (‘derive’ them) and what their range of applicability is. ALL laws of physics have significant limitations as to when and where they apply. It is important for any deeper understanding that the student develops an insight into these aspects of physical law. We will use concepts previously learned in Mechanics, like Newton’s Laws and conservation laws. With them and with new empirical observations we will explore how the presence of electric charge causes the numerous phenomena of electricity and magnetism. We will learn about the rules which govern circuitry. As we go along, we will discover fundamental laws called the Maxwell Equations, which allow us to describe all of these phenomena and unite the concepts of magnetism and electricity as two aspects of the same thing: electric charge and its motion. We will learn to describe electromagnetic phenomena as the results of the propagation of electromagnetic waves. Then we will study new phenomena, which occur when temperature changes, e.g. heat transport, specific heat, and the fundamental laws of thermodynamics. These new laws will add to our understanding of all other fields of physics in that they provide a direction in which natural processes spontaneously progress. A working knowledge of calculus is required. Calculus II is a pre-requisite for this course! Note, that the systematic of the science of physics does not follow the systematic of mathematics! We will have to use concepts like differentiation, integration, and vectors from week one on. Also, good success in this course is unlikely without a solid grasp of algebra, geometry, and trigonometry. All of the following information is tentative and I reserve the right to change any of it as seems necessary to keep the class average on course. If such changes are made, they will be announced in class. It is your responsibility to stay informed and to catch up with anything you may have missed in class. Lecture Our course consists of a large amount of information and much of it is new to many students. I have arranged the content into seven major sections: Electricity- the phenomenon of electrical charge, field, force, energy, and electric potential; Basic Circuitry- resistor and capacitor networks; fundamentals of time dependence in circuits Magnetostatics- surprising effects of moving charges, right hand rule frenzy Magnetism- more involved consequences of motion of charges Electrodynamics- the Maxwell Equations describe how magnetic fields arise out of changing electric fields and vice versa; electromagnetic waves; Thermal physics- temperature and heat, heat transport, thermal phenomena; Four Laws of thermodynamics- heat engines, phase changes and phase diagrams, th.dyn. potentials and partial derivatives Each topic by itself is not terribly difficult. However, for many students much of the material is new and our brain has only so much capacity to deal with new things in a short amount of time. To help you with that aspect of learning, I break lecture down into actual lecture blocks and interactive activities. Some activities deal with videos, others with web applets (bring an internet device to class, if you can), others with in-class demonstrations, and yet others with active problem solving. They are designed to clear your brain’s short term memory and make it susceptible again. This help will only be effective, if you actively participate in the assignments. Some technical notes: The lecture will in part be presented in power point and in part on the white board. Demonstrations, videos, and web-applets will be used wherever helpful in illustrating a complex or new phenomenon or principle. You need to write down the information on the white board as your lecture notes, or it will be lost. My power points on the webpage are printer friendly and help you to keep up with the material on the white board. You are expected to take notes about videos, applets, and demonstrations. The content of each may be part of exam questions. I employ group work techniques during lecture. Our department’s record, as well as national studies, has shown that the use of modern teaching techniques deepens understanding and reliably improves the outcome of standardized tests of knowledge retention. Our brain has only so much capacity to deal with new things in a short amount of time. To help you with that aspect of learning, I break lecture down into actual lecture blocks and interactive activities. Some activities deal with videos, others with web applets (bring an internet device to class, if you can), others with in-class demonstrations, and yet others with active problem solving. They are designed to clear your brain’s short term memory and make it susceptible again. This help will only be effective, if you actively participate in the assignments. Discussion Sessions and Laboratory Participation in discussion is mandatory. Discussions are integrated with the lab sessions. Your participation will only count if you sign the signup sheet during discussion. Participation in all laboratories is mandatory for the successful completion of this course, unless you have had my prior agreement to transfer a full lab sequence grade from a previous term. There is no time for makeup labs. Each pair of students submits a streamlined single lab report. The report consists of: The lab book with original data and pertinent information necessary to reproduce the results. A summary statement about the main result(s) within error. Tables and short text with the main data analysis. Graphs with proper error bars and appropriate fitting curves. A self-evaluation of your own pre lab answers (pre lab submitted together with the report). Active and thoughtful lab participation is part of the lab grade. As the term progresses, my expectations will increase: During the first few labs, it is mainly your active participation that is assessed. By the week of exam 1, we will operate at full expectation level. At that time, thoughtful work will include the anticipation and correction of systematic errors, your decision to adapt the experiment plan to the factual situation in the lab, and other such proactive contributions. The competence of your contribution will include such factors as the correct use of measurement equipment and the identification and timely correction of obviously wrong results. Think of this as a skill you need to master for future job performance. In professional life you do have to display professional conduct and appropriate reflection on your work. Look at our lab rules as training toward honing that professional competence. A ‘good’ lab group consists of four students (you will need to build two pairs), who share in all aspects of the experimental work, the note taking, and who are all reasonably prepared for the tasks. The latter requires coming to lab prepared. Plan ahead to work at least half an hour on the lab manual before lab, and, before the first lab, work through the data and error treatment section. Exams The exams will contain both quantitative and conceptual problems. The exams will be closed book and closed notes. I will provide you with a formula sheet (the master equations listed in the lab manual). The use of any electronic equipment is not permitted during the exam. Calculators with no formulas stored on them are acceptable. All exams are mandatory and none of the grades will be dropped or replaced. The exams will be held at the following times and cover the following chapters in Young & Freedman: Exam 1, midterm, PS239 – Exam 2, final, PS239 – F 6/12 F 7/03 410 – 550 pm 410 – 550 pm Chapter 21-28 Chapter 29-33, 17-20 Homework We use the Mastering Physics online homework system (see course webpage). The online homework must be submitted by each student individually but you are allowed to work together on the solution as long as everyone contributes an equal share of work and contributes to all problems. The deadlines for homework are indicated in the tentative schedule below and on the Mastering Physics website. They are subject to change as announced during lecture and in Mastering Physics. Be advised not to work last minute on the online submissions. The system tends to be busy at times and the internet connection could be down. It is your responsibility to work and submit before the deadline. I set the online hw system up to accept post deadline submissions for a penalty. The penalty builds up over two hours. The system will close for late submission on the Saturday after the final exam at 11pm. The MP syntax requires some experience. I provide a no penalties training hw, which does not count toward the grade. It gives you opportunity to learn the syntax to avoid penalties in the actual hw. The assignment is called ‘HW0’. You should strive to set up and use the training hw tonight because regular hw will be due Saturday night and thereafter once a week. HW0 is due Wednesday night. A short list of common sources of grade loss in MP: - Wrong spacer between multiple entries - Wrong rounding of final or of intermediate results - Multiple attempts used up for the same wrong answer (note also: MP has a 2% answer tolerance criterion for grading) Some problems have hint boxes. Opening hint boxes is not causing any penalty, except when you enter wrong answers into answer boxes within hint boxes. On the other hand, you can earn partial credit for a correct answer in a hint box. Special accommodations If you have a physical, learning, or psychological disability and require accommodations, please let me know as soon as possible. I will try to accommodate your condition as best as circumstances allow. You will need to register with University Disability Support Services (UDSS) in SEO, room 330 Knight Hall, 766-6189, TTY: 766-3073. If you choose to notify me late about such circumstances you forfeit your right for special accommodation for that instance. Academic honesty Don’t cheat. In the long run you are only hurting your chances of succeeding at college. The actual university rules: Academic dishonesty is defined in University Regulation 802, Revision 2 as “an act attempted or performed which misrepresents one’s involvement in an academic task in any way, or permits another student to misrepresent the latter’s involvement in an academic task by assisting the misrepresentation.” and there is a well-defined procedure to judge such cases and serious penalties may be assessed. A shorter common sense interpretation could sound something like this: If it’s not your work, don’t pretend that it is. Note that collusion and complicity are also punishable under this rule. For our work the following is of particular relevance: HW is group work in the sense explained above. Exams are not group work and must be entirely your own work and must be performed without consulting any help (no books, notes, electronic media, etc. other than what is being handed out to you). You may use solution CDs and other sources, which provide answers to practice questions for MP, but using such sources for the actual hw problems is fraud. Anyone, who will be caught committing fraud of any kind, will receive an F as course grade and the Dean of Students will be formally notified of the incident to take it on record. Grading - The average final grade in the course has historically been a B (GPA ~ 2.6). This is right on target for College of A&S and College of Engineering grade averages for 1000 and 2000 level classes. Some courses have often significantly lower grade averages (for example, Calc I, II, III or Statics and Dynamics, and Phys 1210). Details of grading Exams: Homework: Labs: (subject to revision): 2 (60%) 11 (20%) 9 (20%) _____ 100% Scale: A B C D F > 90.0% 80.0-89.99% 70.0-79.99% 60.0-69.99% < 60.0% I reserve the right to curve the final grade and each exam. I will discuss grades for hw, labs, exams, and all other grades only for up to one week after the work has been handed back to class (not one week after you have collected it). General Rules of Conduct during class time: No electronic devices other than for classroom advised internet access. No taping of any kind without prior permission. No unrelated activities that interrupt class. Read your university email account at least once daily. Schedule Phys 1220 Summer Course ‘15 M May 26-29 - T Intro E1 W E2 E3 R E4 E5 Lab1 + disc 1 E10 E11 Lab3/4+ disc 3 M3 M4 M5 M6 HW0,11pm E6 E7 E8 E9 Lab 2/3,disc 2 June 1 - 5 E12 E13 M1 M2 Lab5+ disc 4 June 8 – 12 Ohm C netwk M7 M8 M9 M10 Lab6+ disc 6 June 15 -19 T3 T4 Lab 8+ disc 8 June 22-26 T1 T2 T9 T10 Lab 10+disc June 29-July3 T7 T8 E Electricity M Magnetism T Thermo B coil Heat cond. Spec heat F Field Lines HW1/2,Sun 11pm Par/Ser R HW 3/4, Sun 11pm HW5/6, Sun 11pm midterm exam M11 M12 Lab 7+ disc 7 T5 T6 Lab 9 + disc 9 T11 T12 final exam Lenz HW7/8, Sun 11pm Th. Expansion HW9/10, Sun11pm HW11, Sat! 11pm HW12, Sat! 11pm Tentative lecture plan (use reading guide on webpage to come prepared): Intro E1 E2 E3 E4 E5 E6 E7 E8 E9 E10 E11 E12 E13 M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 Syllabus, ch 21: F, electrostatic force general, induction, F-U-E-V overview ch 21: F, point charges ch 21: E, electric field general and point charges ch 21: E, continuous distributions of charge, Gauss’s Law ch 22: Gauss’s Law, examples ch 22: Gauss’s Law, examples ch 22: Gauss’s Law, examples ch 23: U – electric potential energy ch 23: V – electric potential transition to circuitry ch 25: current and resistivity, Ohm’s law ch 26: networks, Kirchhoff rules ch 24: capacitors, networks ch 24: networks, special capacitors ch 27: magnetic fields and motion of charges ch 27: Biot Savart law ch 28: current carrying wires ch 28: Ampere’s law ch 29: Faraday’s law ch 29: Lenz’s law, motional emf ch 30: magnetic induction ch 30: RL, LC circuits ch 30: LRC circuits and resonance ch 31: AC currents ch 31/32: AC and EM-waves ch 32: Maxwell’s laws and EM waves ch 17: temperature, heat, thermometers ch 17: thermal conduction, expansion; specific heat ch 17: specific heat, state equations (18) ch 18: kinetic gas theory ch 18: phase diagrams (pV and pT) ch 18: state variables, first law ch 19: pV diagram calculus ch 19: pV diagram calculus, examples ch 19: heat capacity ch 20: second law ch 20: engines ch 20: entropy etc. Note that chapter 25 and 26 will be taught before chapter 24!