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Welcome to Physics 1010: The Physics of Everyday Life

Welcome to Physics 1010: The Physics of Everyday Life. Instructor: John Bohn Web: http://www.colorado.edu/physics/phys1010. Instructor : John Bohn Teaching assistant : Megan O’Sadnick Learning assistants: Ruth Shewmon Tara Drake What you will need:

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Welcome to Physics 1010: The Physics of Everyday Life

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  1. Welcome to Physics 1010: The Physics of Everyday Life Instructor: John Bohn Web: http://www.colorado.edu/physics/phys1010

  2. Instructor: John Bohn Teaching assistant: Megan O’Sadnick Learning assistants: Ruth Shewmon Tara Drake What you will need: Text – How things work; the physics of everyday life, L. Bloomfield 3rd edition Clicker – bring to class everyday. Available in the bookstore Cost: $37.50 Calculator – bring to class everyday. Prerequisites:  High school algebra. The class will not use trigonometry, but will use algebra frequently as well as working with graphs and scientific notation. Wait-listed? Don’t worry. Do all work, and will be allowed in.

  3. Q. What is the point of this class? A. Understanding how world around you behaves. Physics principles- explain, let you predict future (what will happen)! Very specific learning goals. (see syllabus) Explain, predict, understand how tested by experiment: Motion, fluids, electric charges, electromagnetic waves… Presented in terms of stuff around you: cars, flashlights, microwave ovens, radios, light bulbs, water systems, …

  4. all sorts of other wonderful stuff to help you… 1. Wonderful website 2. Clickers 3. Online simulations (physics games). 4. Online homework 5. Problem solving sessions. 6. In-class experiments 7. Fancy powerpoint slides

  5. Physics 1010 website, source of all knowledge! http://www.colorado.edu/physics/phys1010 Home Page Syllabus (Complete) Weekly Reading Assignments Weekly Homework Assignments Course Calendar *Lecture Notes (posted after class) Learning Goals Homework Solutions Exam Reviews and Answers All the Information Needed for 1010 Logical Approach for Problem Solving Supplementary Bloomfield Material Help Room Schedule Department of Physics Home Page Physics links/downloads read!! Sections 1.1 and 1.2 For Thursday

  6. iClicker You will use the iClicker in some of your future classes. Your clicker must be registered (see website).

  7. Clickers • Everyday: swap clicker code to BA • Wait for 1st clicker question to open • Hold down On/Off Switch 4 seconds • Flashing blue light: hit B A • Type in Answer. you’re set for rest of class period • DO NOT TURN OFF CLICKER FOR CLASS (o.w. repeat above for any new clicker question)

  8. Clicker question Do you have your clicker here today? a) yes b) no c) 1492 d) The Gettysburg Address e) I think so, Brain, but where are we going to get a trained octopus this time of night?

  9. Have you used clickers in a prior class? • A – Yes • B – No You are NOT locked in to your first choice. Final answer entered will be the one accepted/graded.

  10. Your iClicker Put your name and contact information on your clicker so if you lose it, there is a chance it will be returned. You can put your contact information on a piece of tape on the clicker if you plan to return the iClicker in the future

  11. Your iClicker Use ONLY your iClicker! Responding with another students iClicker is a violation of the Honor Code and WILL be reported.

  12. Clicker grading • Two points for showing up/clicking • 3 points for reading quiz • One question/lecture will be graded We will start keeping score on Thursday! Recall: reading assignement

  13. Student interest survey-- Why are you in this class? a) Just liked physics. b) Satisfies science requirement and physics not as bad as other choices. c) Hate physics, but only class computer would let you in d) Heard Prof. Bohn was awesome. e) Other?

  14. How do you think that you learn physics best? • Listening to lecture • Reading the textbook • Doing the homework • Discussing physics with others • Other

  15. Course Goal: Every student learn everything! If it’s not important to learn, we took it out.

  16. Guiding principles: (basis for how course is run) • 1.People understand concepts better by seeing them in action and thinking about them than by passively listening. • 2. Understanding physics (& solving problems that develop understanding) • is a learned skill, like cooking, or playing basketball. • Takes time, effort, and practice. • 3. People learn best by thinking about topics and discussing them with others. • 4. Students learn most when they take the responsibility for what is learned. We cannot teach you physics! Physics is not collection of facts. Is way of thinking. Only you can teach yourself to think! Analyzing, applying concepts, solving problems.

  17. We can provide you with content, demonstrations, problems, guidance, organization, etc. to help you learn. Reward activities and efforts conducive to your learning (grade) We think it is important and useful for you to think/apply ideas to the real world. We do work to try and help you learn. But also takes work on your part!

  18. Classwork & Grading: Grade based on total number of points earned. In-class Reading Quizzes 3 pts x~13 In-class participations (Clickers) 2-4 pts per class x 30 Homeworks ~15-20 pts x~14 Hour Exams 30 pts x2 Final Exam 60 pts x1 Your lowest homework, lowest in-class participation, will be dropped. Do everything, and it’s almost impossible to get lower than B. (< 50% =F) Total in-class and weekly homework count the most! Grade depends most on showing up for class, doing reading, and turning in homework every week. If you will miss classes and not turn in homework now and then, Drop now! Save both of us pain.

  19. To learn physics and do well in this class, I expect to spend ?…… working on physics outside of class. • Less than 2 hours per week • 2-4 hours per week • 4-6 hours per week • 6-8 hours per week • 8+ hours per week right answer- c. On average 4-6 hours. Means more some weeks. Students who think this too much hate class; ones who think it’s ok, love the class.

  20. Homeworks Homeworks • Normally due Fridays at midnight. • Follow link on course website to CULearn. Online submission • Need username and Identikey password Homework #1 to be posted to-day. • Problem Solving Sessions Thurs/Friday • HW#1 is due Friday (8/27) at midnite.

  21. Office Hours & Problem Solving Sessions Phys1010 problem solving session in help room. Just look around. Regular Weekly Hours (Starts Thurs.) Hours TBD; check with syllabus Phys help room Enter through G2B90 Homework is too hard to do alone, but ok & learn lot when work together. We will help interactions,coach, We will NOT give answers.

  22. Collective Work vs. Independent work.. Group Work Encouraged(in fact, hopefully, necessary) • What is authorized: • working with others to make sense of questions • collectively sorting out the answer (explaining reasoning) • writing up your own solution in your own words • What is NOT authorized: • telling students the answer • representing someone else’s work as your own

  23. The Honor Code

  24. What is Physics? • Covers lots of stuff. But a big part is how things move. In this class: • Objects (e.g., baseballs) • Fluids (air, water) • Heat • Electricity (moving charges) • Electromegnatic waves (radio) • Light

  25. Motion Understand motions around us: balls, cars, bikes, people, atoms …. But before we get to how or why, we need to be able to describe motion, using words, graphs, equations.

  26. What do you need to describe the motion of an object? • A) where it is • B) where it’s going • C) both where it is and where it’s going. • D) where its been Answer: c. Need both position and velocity.

  27. Measuring position Unit: meters (abbreviation m) Meter sticks; sonar

  28. Human Motion (& using graphs) Demo 1: Sketch distance (position) vs. time graph for 1) Person moving away from origin (motion detector) at steady velocity on left. 2) Person moving toward origin (mot. det.) at steady velocity on right. + + position 0 position 0 time time - -

  29. + + + + + + + + position position position position position position position position 0 0 0 0 0 0 0 0 time time time time time time time time - - - - - - - - Human Motion • Demo 1: • Sketch distance (position) vs. time graph for • Person moving away from origin • (motion detector) at steady velocity on left. • 2) Person moving toward origin • (mot. det.) at steady velocity on right. B A D C

  30. -10 0 10 feet Human Motion Demo 1: Sketch distance (position) vs. time graph for 1) Person moving away from origin (motion detector) at steady velocity on left. 2) Person moving toward origin (mot. det.) at steady velocity on right. Answer is C + + position 0 position 0 time time - - away toward

  31. Speed If you drive 60 miles/hour, that’s a speed. It’s also 1 mile/minute It’s also 1/60 mile/s “Physics” units: meters/second (abbreviation m/s)

  32. There are 1600 meters in a mile. If you drive 60 miles/hour, how fast is this in m/s? • 60 m/s • 160 m/s • 27 m/s • 270 m/s • 1600 m/s

  33. How does this work?

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