Physics 207, Sections: 301/601 – 309/609 General Physics I, Michael WinokurGeneral AnnouncementsAnnouncements, cont’dSlide 4GradingLectureA quick “quiz” on what not to do…Slide 8Course ObjectivesScope of Physics 207Today and Thursday’s Topics:Chapter 1 ObjectivesPosition and TimeRandom facts about the cardiovascular systemA preliminary stepSlide 16Different representationsA slightly more complicated exampleStandard QuantitiesUnitsRecapPhysics 207: Lecture 1, Pg 1Physics 207, Sections: 301/601 – 309/609 General Physics I, Michael Winokur Agenda for TodayAgenda for TodayCourse IntroductionCourse Introduction General Announcements Structure of the course Scope of the course Begin chapter 1Course Homepage: http://www.physics.wisc.edu/undergrads/courses/spring10/207/Physics 207: Lecture 1, Pg 2General AnnouncementsAssignments:: Text: Randall Knight, Physics for Scientists and Engineers with Modern Physics Reading Assignment: Chapters 1 & 2 (sections 2.1-2.4) Position, Time, Change (i.e. motion), Vectors, Units, Assessment HW1: Due Wednesday 1/27 at midnight (Also Mastering Physics Practice Problem Set ) See www.masteringphysics.com Register for a Mastering Physics Account Instructions are posted:Instructions are posted:http://www.physics.wisc.edu/undergrads/courses/spring10/207/HW.htmHomework will usually be Homework will usually be duedue by midnight on by midnight on Wednesday Wednesday with a 1% per hour penalty (up to 50% maximum)Physics 207: Lecture 1, Pg 3Announcements, cont’dLabs http://www.physics.wisc.edu/undergrads/courses/spring10/207/labs.htm Located in room 4310 Chamberlin Hall Begin on Monday of next week (Expt. 1a & c) Few formal write-ups, mostly worksheetsLectures: (the PowerPoint component) will be posted at the (the PowerPoint component) will be posted at the course websitecourse websitePhysics 207: Lecture 1, Pg 4Announcements, cont’dHonors students: One Friday seminar per week (including exams weeks, may miss up to three.) More on FridayDrop in tutoring: In room 2131 Chamberlain (shared with In room 2131 Chamberlain (shared with Physics 201, start next week), See:Physics 201, start next week), See: http://www.physics.wisc.edu/undergrads/courses/spring10/207/consult.htmDiscussion Sections: Start today, one session will center on group problems (Th/Fr) and one on homework/exam (Tu/We) review.Physics 207: Lecture 1, Pg 5GradingSeveral components:Lecture: Occasional reading quizzes Homework Sets (15%)Exams: Three evening midterms (16%) and a final (22%)Discussion section: (5%) Review homework, at most one day per weekCooperative learning exercisesLabs: (10%)Mostly worksheets (up to one formal write up) May miss up to one lab (only with a valid excuse)Physics 207: Lecture 1, Pg 6LectureThree main components: Discussion class material»Selected topics from text Demonstrations of physical phenomenon»Physics is an experimental scienceExample: Ping-pong ball bazooka Interactive exercise with conceptual “Active Learning” problems»Critical thinking and problem solving(Almost no memorization required)ActActPhysics 207: Lecture 1, Pg 7A quick “quiz” on what not to do…Please read and study the following paragraph for a minute or so. “Last Fernday, George and Tony were in Donlon peppering 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 8A quick “quiz” on what not to do…1 . When were George and Tony in Donlon?2 . What did the ditty strezzle do to George’s grep?3 . What kind of saples did George and Tony pepper?4 . What was Tony’s reaction?5 . What do you imagine happened next?6 . Based on the incidents in this story, do you think George and Tony will want to return to Donlon? Why or why not?Physics 207: Lecture 1, Pg 9Course ObjectivesTo 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 principlesTo develop an intuition of the physical world Again: Memorization is of little importancePhysics 207: Lecture 1, Pg 10Scope of Physics 207Classical Mechanics: Mechanics: : How and why things work.How and why things work.MotionMotion (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 (Vibration Demo)(These reflect Newton’s Laws and forces) Properties of matter; a roll of the dice (Thermodynamics)Physics 207: Lecture 1, Pg 11Today and Thursday’s Topics:Position and Time (Chapter 1)Position and Time (Chapter 1)PositionTimeDisplacement versus time (velocity)Systems of unitsDimensional AnalysisSignificant digitsAt right is the world’s smallestbiped: A single molecule of kinesin, walks along a cellular microtubule fiber, pulling along behind it a vesicle of nutrients http://www.ted.com/index.php/talks/sheila_patek_clocks_the_fastest_animals.htmlPhysics 207: Lecture 1, Pg 12Chapter 1 ObjectivesUnderstand particle one-dimensional motionUse motion diagramsDistinguish position, velocity & accelerationGain experience with vector algebraUnderstand proper use of significant figuresUnderstand position vs. time graphsPhysics 207: Lecture 1, Pg 13Position 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 14Random facts about the cardiovascular system15 million blood cells are produced and destroyed every second60,000 miles of blood vessels in our bodiesRed blood cells live 120 daysSmallest cross-section: 30 micron diameter capillary Largest cross-section: 1 inch diameter (i.e., aorta)Physics 207:
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