Page 1Physics 151 – Lecture 1Physics 207: Lecture 1, Pg 1Physics 207, Sections: 301/601 Physics 207, Sections: 301/601 ––314/614314/614General Physics IGeneral Physics IMichael Michael WinokurWinokur& Pupa Gilbert& Pupa GilbertLecture 1Lecture 1Agenda for TodayAgenda for TodayCourse IntroductionCourse IntroductionGeneral AnnouncementsGeneral AnnouncementsStructure of the courseStructure of the courseScope of the course Scope of the course Begin chapter 1Begin chapter 1Homepage: Homepage: http://romano.physics.wisc.edu/phys207_Fall2007http://romano.physics.wisc.edu/phys207_Fall2007Physics 207: Lecture 1, Pg 2AnnouncementsAnnouncementsAssignments:Assignments:Text: Randall Knight, Physics for Text: Randall Knight, Physics for Scientists and Engineers with Modern PhysicsScientists and Engineers with Modern PhysicsRead: Chapters 1 & 2 (sections 2.1Read: Chapters 1 & 2 (sections 2.1--2.6)2.6)Position, Time, Change (i.e. motion), Position, Time, Change (i.e. motion), Vectors, Units, AssessmentVectors, Units, AssessmentHW0 and HW1: Due Wednesday 9/12HW0 and HW1: Due Wednesday 9/12(HW0: Mastering Physics Practice Problem Set )(HW0: Mastering Physics Practice Problem Set )See www.masteringphysics.com Register for a Mastering Physics AccountInstructions are posted:romano.physics.wisc.edu/winokur/phys207_Fall2007/HW.htmTypically Homework will be due by 11:59 PM on the stated day, usually WednesdayWednesdayNote: No credit for late workPhysics 207: Lecture 1, Pg 3Announcements, contAnnouncements, cont’’dd Labs http://romano.physics.wisc.edu/winokur/phys207_Fall2007/labs.htm In room 4310 Chamberlin Hall Begin on Monday of next week (Expt. 1a & c) Few formal writeFew formal write--ups, mostly worksheetsups, mostly worksheetsLecturesLectures::(when in PowerPoint) will be (when in PowerPoint) will be available on the webavailable on the webClickers Clickers (Participation is the only requirement)(Participation is the only requirement)Note: Will also be used in Physics 208Note: Will also be used in Physics 208See:See:http://romano.physics.wisc.edu/winokur/phys207_Fall2007/clickershttp://romano.physics.wisc.edu/winokur/phys207_Fall2007/clickers.html.htmlPhysics 207: Lecture 1, Pg 4Announcements, contAnnouncements, cont’’ddHonors students: Honors students: One Friday seminar per week (including exams weeks, may miss up to three) plus a project. More on FridayConsultation: Consultation: In room 2131 Chamberlain (shared with In room 2131 Chamberlain (shared with Physics 201), See:Physics 201), See:http://romano.physics.wisc.edu/winokur/phys207_Fall2007/consult.http://romano.physics.wisc.edu/winokur/phys207_Fall2007/consult.htmhtmDiscussion Sections:Discussion Sections:Start today, a short Start today, a short precourseprecourseassessment (does assessment (does notnotaffect your grade)affect your grade)Physics 207: Lecture 1, Pg 5Grading InfoGrading Info Course has several components: Lecture: (traditional lecture, demos and Active learning) 2% Homework Sets (12%) Exams: Three evening midterms (16%) and a final (20%) Discussion section: (8%) Review homework Cooperative learning exercises Occasional quizzes Labs: (10%) Mostly worksheets (possibly one formal write up) and a few quizzes May miss up to one lab (with valid excuse)Physics 207: Lecture 1, Pg 6Lecture OrganizationLecture OrganizationFour main components:Four main components: Discussion class material» Selected topics from text Demostrations/experiments of physical phenomenom» Physics is an experimental science Interactive exercise with conceptual“Active Learning” problems» Up to five per lecture» Critical thinking and problem solving(Little memorization required) Interactive Applications» To illustrate conceptsActActPage 2Physics 151 – Lecture 1Physics 207: Lecture 1, Pg 7Learning GoalsLearning Goals To begin to understand basic principles (e.g. Newton's Laws) and their consequences (e.g. conservation of momentum, etc.) To solve problems using both quantitative and qualitative applications of these physical principles To develop an intuition of the physical world Note: Memorization is of little importancePhysics 207: Lecture 1, Pg 8A quick A quick ““quizquiz””on what not to doon what not to do…… Please read and study the following paragraph for a minute or so. “Last Fernday, George and Tony were in Donlonpeppering gloopy saples and cleaming, burly greps. Suddenly, a ditty strezzle boofed into George’s grep. Tony blaired, “Oh George, that ditty strezzle is boofing your grep!” After reading and studying the paragraph, and without referring to the paragraph, please answer the following questions:Physics 207: Lecture 1, Pg 9Scope of Physics 207Scope of Physics 207Classical Mechanics:Classical Mechanics:Mechanics: Mechanics: How and why things work.Motion (dynamics), balance (statics), energy, vibrationsClassical: Classical: » Not too fast (v << c), c ≡speed of light» Not too small (d >> atom), atoms ≅ 10-9 mMost everyday situations can be described in these terms.Most everyday situations can be described in these terms. Path of baseball (or a ping pong ball) Path of rubber ball bouncing against a wall Vibrations of an elastic string (These reflect Newton’s Laws and forces) A roll of the dice (thermodynamics)Physics 207: Lecture 1, Pg 10Today and MondayToday and Monday’’s Topics:s Topics:Position and Time (Chapter 1)Position and Time (Chapter 1) Position Time Displacement versus time (velocity) Systems of units Dimensional Analysis Significant digits At right is the world’s smallestbiped: A single molecule ofkinesin, walks along a cellular microtubule fiber, pulling along behind it a vesicle of nutrients Physics 207: Lecture 1, Pg 11Position and TimePosition and TimeAn example below:An example below:Question: What is happening in the two time elapse sequences shown below? What construction could I use to quantify it?Physics 207: Lecture 1, Pg 12A preliminary stepA preliminary step Predicated on the need to know where and when? Where requires a spatial reference frame and a system specifying position (magnitude, direction and units) When requires a temporal reference frame (magnitude, direction and units)1 2 3 4 5 6 6 5 4 3 2 1Page
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