Welcome to Physics 220

1
Welcome to Physics 220!

• Today you will learn
• what you need to get for the class
• what work I will require of you
• how to earn a good grade
• how to get started with Mastering Physics
• some basic facts about forces between charged
  particles.

2
Some Basic Information

• The course website is
• http//www.physics.byu.edu/faculty/rees/220
• or just go to the Physics Department home page
  and follow the link.

3
Some Basic Information

• Workload
• Count on at least two hours outside class for
  every hour in class.

4
Some Basic Information

• Required Work
• Reading
• The text is online
• http//www.physics.byu.edu/faculty/rees/220/Book/
  introduction.htm
• Assignments are on the Class Schedule
• (No points are given for reading)

5
Some Basic Information

• Required Work
• 2) Quizzes
• In class daily
• 2 points participation 1 point if right
• Transmitters needed

6
Transmitters
7
Transmitters
Old transmitters will be exchanged for new
transmitters at no cost! Go to the Bookstore on
Sept. 11-12. We will start using the transmitters
on Sept. 13!
8
Some Basic Information

• Required Work
• 3) Homework
• Due Dates on Class Schedule
• http//www.physics.byu.edu/faculty/rees/220
• Assignments on Mastering Physics

9
Some Basic Information

• Required Work
• 4) Walk-in Labs
• Due Monday after each lab ends Schedule
  online
• Submit data online
• http//www.physics.byu.edu/faculty/rees/220
• Lowest Lab Not Counted
• Saturday morning is change-over.

10
Some Basic Information

• Required Work
• 5) Chapter Tests
• Due Dates on Class Schedule
• http//www.physics.byu.edu/faculty/rees/220
• On Mastering Physics
• A Sample Test will be available in
• plain and annotated versions.
• Multiple-choice and problems

11
Some Basic Information

• Chapter Tests, cont.
• Oral Tests
• Lowest 10 percentile on each
• Chapter Test
• Optional
• Score can be raised to the 10th
• percentile

12
Some Basic Information

• Required Work
• 6) Two Midterm Exams
• In Testing Center
• Dates on Class Schedule
• http//www.physics.byu.edu/faculty/rees/220
• Like Chapter Tests essay questions
• End at 100 pm!
• Late tests penalized 15

13
Some Basic Information

• Required Work
• 7) Final Exam
• In 445 MARB, Dec. 20, 7-10 am
• Part I Like Midterm
• Part II Short-answer comprehensive

14
Incentive Grades

• Walk-in Labs
• In-class quizzes
• Homework
• Mean score is maximum possible
• Mean score or above 100
• No scores over 100

15
Grade Breakdown

• Walk-in Labs 5
• In-class quizzes 5
• Homework 10
• Chapter Tests 20
• Midterm Exams 36
• Final Exam 24

16
Letter Grades

• Percentile Range Letter Grade
• 85 100 A
• 67 85 A
• 50 67 B
• 36 50 B
• 22 36 B
• 14 22 C
• 10 18 C
• or a little better

17
Miscellaneous Information

• Office Hours
• N-357 ESC, MWF 10 11 am (after class)
• 2) Tutorial Lab
• N-361 ESC most hours from 8am 6 pm
• 3) Walk-in Lab
• S-415 ESC, open when the building is open.

18
What do I do now?

• Get your transmitter and Mastering Physics Kit
• 2) Do reading for Friday
• 3) Do Mastering Physics Introduction
• 4) Pick up CID slip today and activate it online.
• http//www.physics.byu.edu/faculty/rees/220

19
Getting Started with MP

• You will need to register online.
• Have the following ready
• Code from mastering Physics Student Access Kit
• Student ID Your 3-digit CID
• Course ID PHYS220REES
• Go to http//masteringphysics.com

20
Getting Started with MP

• Click on Mastering Physics for Knight or the
  Picture that looks like the cover of your Access
  Kit.
• Click on Register

21
Using MP

• Once you have registered
• Click on Mastering Physics for Knight or the
  Picture that looks like the cover of your Access
  Kit.
• Enter your Login Name and Password
• Click on Login

22
Using MP

• Click on Assignment List
• Click on Introduction to MasteringPhysics
• This assignment does not count for points.
• Note due dates. Late work is penalized.
• There are penalties for wrong answers, especially
  on multiple-choice questions.

23
Questions?
24
Basic Rules of Electrostatics
Charges come in two types positive and
negative. Positive charge is produced on a glass
rod by rubbing it with silk. Negative charge is
produced on a rubber rod by rubbing it with fur.
Like charges repel, unlike charges attract.
25
Basic Rules of Electrostatics
Conductors are materials in which charges move
freely. Insulators are materials in which charges
remain in fixed locations. Charges come in
multiples of the electric charge. The
total charge in the universe is always
conserved. The force between charges is stronger
when the charges are closer.