1 / 19

PHYSICS 50: Introduction

Join Richard Craig in a comprehensive introduction to physics covering key topics, quizzes, homework, and class dynamics. Learn about vectors, units, and more.

shannag
Download Presentation

PHYSICS 50: Introduction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PHYSICS 50: Introduction RICHARD CRAIG

  2. Plan for the day • Introductions • Me, You • Greensheet review • Things I assume you already know • Vectors review • Quiz • Enrollment issues

  3. Richard Craig • Education: • BA UC Berkeley, MS SJSU, PhD UCLA • 1 year teaching at West Valley CC (1979) • 5 years research on semiconductor lasers • 5 years engineering manager in laser start-up company • 12 years VP/CEO of laser companies • Retired 2006 • Came back to teach last spring

  4. Class Emphasis • Concepts as important as solving problems • Test include some conceptual problems • But this is not physics for poets! There will lots of problems to solve • You get little benefit from watching me derive formulas • More examples than derivations • Almost daily quiz • I will try to bring in technical industry examples • Talk a little bit about technology and history of our valley • I will adjust class difficulty based on your feedback • I have never taught this class before!!!

  5. Green Sheet • Do your homework!! • Lots of quizzes • Office hrs: Tu/Th after class, and W after lab

  6. Homework #1 • Read Chapter 1(all), Chapter 2 (not 2.6) • Exercises and Problems:1.3, 1.49, 1.99, 2.14, 2.39, 2.59 • Due next Thursday, 1/31

  7. Class Web Site • Class web site • Go to http://www.sjsu.edu/faculty_and_staff/faculty_pages • Search for Craig • I will post • Power point lectures • Homework assignments • I might post • Homework solutions • Exams and Quizzes • Exam and Quiz solutions

  8. Why my job is difficult in 50 • Your 1st Class in Physics • Some of you (many) want to become engineers or scientists but may not have dedication or skill or both • Physics is the same at DeVry, SJSU, or MIT, you have to learn it • About 20% of you will not get a passing grade in this class

  9. Things I assume you know • Units • We will use MKS units 90% of the time • Length: meters • Time: seconds • Mass: kilogram • Dimensional Analysis • You can only add the same units • How to convert units

  10. Things I assume you know • Exponential Notation • About 6,000,000,000 people on the earth • 6 x 109 people • Units Prefixes • nano (n) • micro () • milli (m) • kilo (k) • mega (M) • giga (G)

  11. Things I Assume you know • Significant figures • What they are • 100, 100.0, 100.0000 • How to use them • Addition, Subtraction, Division, Multiplication • Estimates (order of magnitude) • Example: People density of USA

  12. Things I Assume you know • Simple Trigonometry

  13. Vectors • Scalar: A number • Vector: A number and a direction • Examples • Time • Mass • Velocity • Force

  14. Vectors • Adding Vectors • examples • Components of vectors • Unit vectors • definitions

  15. Vectors have components Vector Addition: Components add like scalars

  16. Units Vectors • Unit vectors i,j,k are magnitude 1 and point in the x,y,z directions respectively

  17. Vector Multiplication 1 Scalar Product or Dot Product

  18. Vector Multiplication 2 Vector Product or Cross Product Magnitude Direction Right hand rule:

  19. Quiz • Work out problem (5 minutes) • Explain pm to another member of class (5 minutes) • It is ok to change your answer after talking • Turn in (electronic in future) • We review

More Related