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Why electricity and magnetism?Prof. Stephen Sekula1/18/2011Supplementary Material for PHY1308 (General Physics – Electricity and Magnetism)Stephen J. Sekula - SMU 2Who are you?Stephen J. Sekula - SMU 3The ATLAS ExperimentThe BaBar ExperimentStephen J. Sekula - SMU 4Stephen J. Sekula - SMU 5Why should I care about electricity and magnetism?Stephen J. Sekula - SMU 6Magnetic Resonance Imaging (MRI)PET Scans (Positron Emission Tomography)Stephen J. Sekula - SMU 7While this data is for students and their majors, clearly an education in physics is a critical ingredient in success on the MCAT!(similar data exists on the LSAT)Stephen J. Sekula - SMU 8While this data is for students and their majors, the reason a physics major is valuable is because physics teaches you about problem solving in challenging environments, requiring innovative thinking.Stephen J. Sekula - SMU 9Stephen J. Sekula - SMU 10Stephen J. Sekula - SMU 11What are the goals (learning outcomes) of this course?Stephen J. Sekula - SMU 12Stephen J. Sekula - SMU 13What is the structure of this course?Stephen J. Sekula - SMU 14Structure●Lectures●Tue/Th; attendance is required (see syllabus for exceptions)●Expect “chalk talk”, multimedia, demonstrations, and discussions●Homework●about 1 per week – 10% of the grade●strict homework policy (see course website)●quality of homework policy applies to answers on quizzes and tests●Quizzes●about 1 per week, in-class – 15% of the grade●two lowest quiz grades are automatically dropped●Exams●3 incremental in-class exams (see syllabus) worth 45% of the grade●Final exam (cumulative) – 30% of the gradeStephen J. Sekula - SMU 15resources●Me●Office hours: 2-4 on Monday and Wednesday●Additional discussions must be arranged in writing (e-mail)●Teaching Assistant●We will setup 1 help session per week●The Web●Course website: http://www.physics.smu.edu/sekula/phy1308●Communication●I will make announcements over e-mail (please check at least once per week)●I'll push announcements out by Twitter and identi.ca and Facebook, as well as any useful factoids in the news about topics we are discussing.–find anything interesting or have a question? Tag it with #phy1308.Stephen J. Sekula - SMU 16The Big Picture●I encourage you to work together outside of class●cheating and plagiarism will NOT BE TOLERATED●Work handed in must be the unique product of your own effort, even if you collaborate with others●Science has much in common with the humanities●there is a good story, and this class will aim to teach part of it●to seek a deeper understanding of the world around us and the larger cosmos, we will dig rigorously into many subjects●Physics is exciting●physics is the study of energy, matter, space, and time●it is a quest, paid for with the blood of experimental labor and expressed in the language of mathematics, for the ultimate knowledge of the origin, composition, and fate of the universe.Stephen J. Sekula - SMU 17REVIEW OF CORE PRINCIPLESStephen J. Sekula - SMU 18Core Physics Principles 1●Matter can execute motion●that motion can be described using place (coordinates: x, y, z ,etc.) and time (t), changes in place with respect to time (speed, v = Δx/Δt), and acceleration (changes in speed with respect to time)●Forces alter the motion of matter●Newton's Laws–In the absense of forces, objects at rest tend to remain at rest, objects in motion tend to remain in motion (“inertia”, or the tendency of matter to resist change)–Force alters motion, as ecapsulated by F=ma (or its more general form, F = Δp/Δt)●Total Energy and momentum are always conservedStephen J. Sekula - SMU 19Core Physis Principles 2●Matter is made from atoms●all matter is composed of fundamental building blocks called “atoms”●Atoms are composed of electrons, protons, and neutrons●electrons “orbit” a nucleus of protons and neutrons●The macroscopic properties of matter are a result of the behavior of atomsStephen J. Sekula - SMU 20ALGEBRA●You should already be able to . . . ●express statements in symbolic form–example: “Write an equation that expresses the position of an object as proportional to time.”●solve simple equations–1st order equations: 2x – 1 = 3–2nd order (quadratic) equations: 3x2-4x-1=5Stephen J. Sekula - SMU 21Geometry/Trigonometry●You should already be able to . . . ●know what a point, line, and plane are●know how to relate angles when lines bisect each other●explain the relationship between angles in a triangle●compute sines, cosines, and tangentsStephen J. Sekula - SMU 22Vectors●You should already be able to . . . ●know how to define a coordinate system●know that a “vector” is a way of expressing a direction in space using numbers along coodinate axes●know how to write a vector in either “unit vector” notation or in (x,y,z) notation●know how to add and multiply vectorsStephen J. Sekula - SMU 23Calculus●You should already be able to . . . ●explain what a derivative is, and be able to calculate one.●explain what an integral is, and be able to calculate one.Stephen J. Sekula - SMU 24Resources●Don't be afraid of math●if you haven't done this in a while, there are many ways to review●recommended by previous PHY1308 students:–Schaum's reference guides on calculus, trig, etc.–“Calculus for Dummies” or similar book – bad title, good solid and quick review–Tutoring at


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