PHYSICS 113 SYLLABUS Physics 113 A CCN 81104

PHYSICS 113 SYLLABUS Physics 113 -A (CCN: 81104) Fall 2005 Prof. Jed Macosko Office: Olin 215, Lab: Olin 213 Phone: 758 -4981 e-mail: macoskjc@wfu. edu OFFICE HOURS MWF 1: 00 -2: 00 pm, 215 Olin Feel free to drop by any time and I’ll try to accommodate you. Physics 113 is the first course in a two-semester sequence in calculus-based general physics. It does require the use of calculus and simple vector calculations. SCHEDULE - Lectures: Mon, Wed, Fri 9: 00 – 9: 50 am -Each student must also enroll for one laboratory session. - Lab sessions begin the week of Monday, August 29. (see which day and time your particular lab session will be)

TEXT AND MATERIALS The text is the sixth edition of Physics for Scientists and Engineers by Serway & Jewett. For the lab you must get the lab manual from the bookstore (~ $10). EXAMS AND GRADING There will be one final exam and three 50 -minute, in-class midterm exams given at the dates listed below. Homework problems will be assigned for each chapter (due two lecture days later) and they will be also be graded. Homework: 20% 93 1/3 G 100, A; 90 G < 93 1/3, A ; Laboratory: 13% 86 2/3 G < 90, B+; Worst test score: 10% 83 1/3 G < 86 2/3, B; Intermediate test score: 14% 80 G < 83 1/3, B ; Best test score: 19% 76 2/3 G < 80, C+; Final exam: 20% 73 1/3 G < 76 2/3, C; 70 G < 73 1/3, C ; Homework notebook: 3% 66 2/3 G < 70, D+; Class participation: 1% 63 1/3 G < 66 2/3, D; First class: Aug. 24, 2005 60 G < 63 1/3, D ; Last day to drop class: Sept 28, 2005 G < 60, F. Exam 1: Exam 2: Exam 3: Final: Monday, Sept. 19, 2005 Wednesday, Oct. 19, 2005 Friday, Nov. 18, 2005 Monday, Dec. 5, 2005, 9: 00 am

HOMEWORK AND PROBLEM SOLVING Homework and problem solving is a very important part of learning in a course in physics. Approximately 6 -10 questions or problems per chapter will be assigned as homework. We will use Web. Assign. Homework is due two lectures after it has been assigned. No late homework is accepted. Some problems may also re-appear on the exams and the final. POSTINGS Homework, exam solutions and other material relating to the course will be posted on the web site for the class: http: //www. wfu. edu/~macoskjc/Courses/113 Fall 05. htm This class does not use Course. Info or Blackboard. Web. Assign http: //www. webassign. net/ will be implemented for standard homework assignments. You have nine attempts to get the answers right (Demo follows). ATTENDANCE It is expected that students attend all scheduled classes and laboratory sessions. Attendance at the three exams and the final is required - absence will result in a zero grade unless an official excuse is presented. Excuses should be reported to me in advance or as soon as possible.

Tentative outline of class Monday Tuesday Wednesday Thursday Friday Saturday Sunday Aug. 24 Introduction Chapter 1 Aug. 25 Aug. 26 Chapter 2 Motion in 1 D Aug. 27 Aug. 28 Aug. 29 Ch. 2: 1 -D motion Last day of “free” Drop/Add Aug. 30 Aug. 31 Chapter 3 Vectors Sept. 1 Sept. 2 Chapter 3 Vectors Sept. 3 Sept. 4 Sept. 5 Chapter 4 Motion in 2 D Sept. 6 Sept. 7 Chapter 4 Motion in 2 D Last day to add courses Sept. 8 Sept. 9 Chapter 5 Force & Motion I Sept. 10 Sept. 11 Sept. 12 Chapter 5 Force & Motion I Sept. 13 Sept. 14 Chapter 6 Force & Motion II Sept. 15 Sept. 16 Catch-up & Review Sept. 17 Sept. 18 Sept. 19 Midterm 1 Chapters 1 -6 Sept. 20 Sept. 21 Chapter 7 Energy Transfer Sept. 22 Sept. 23 Chapter 7 Energy Transfer Sept. 24 Sept. 25 Sept. 26 Chapter 8 Potential energy Sept. 27 Sept. 28 Chapter 8 Potential energy Last day to drop class Sept. 29 Sept. 30 Chapter 9 Linear Momentum and Collisions

Tentative outline of class Monday Tuesda y Wednesday Thursday Friday Saturday Sunday Oct. 1 Oct. 2 Oct. 3 Chapter 9 Linear Momentum and Collisions Oct. 4 Oct. 5 Chapter 10 Rotation Oct. 6 Oct. 7 Chapter 10 Rotation Oct. 8 Oct. 9 Oct. 10 Chapter 11 Angular Momentum Oct. 11 Oct. 12 Chapter 11 Angular Momentum Oct. 13 Oct. 14 Fall Break Oct. 15 Oct. 16 Oct. 17 Catch-up and review Oct. 18 Oct. 19 Midterm 2 Chapters 7 -11 Oct. 20 Oct. 21 Chapter 12 Static Equilibrium Oct. 22 Oct. 23 Oct. 24 Chapter 13 Universal Gravitation Oct. 25 Oct. 26 Chapter 13 Universal Gravitation Oct. 27 Oct. 28 Chapter 14 Fluids Oct. 29 Oct. 30 Oct. 31 Chapter 14 Fluids

Monday Tuesday Wednesday Thursday Friday Saturday Sunday Nov. 1 Nov. 2 Chapter 15 Oscillations Nov. 3 Nov. 4 Chapter 15 Oscillations Nov. 5 Nov. 6 Nov. 7 Chapter 16 Waves I Nov. 8 Nov. 9 Chapter 16 Waves I Nov. 10 Nov. 11 Chapter 17 Waves II Nov. 12 Nov. 13 Nov. 14 Chapter 18 Waves III Nov. 15 Nov. 16 Catch-up & Review Nov. 17 Nov. 18 Midterm 3 Chapters 12 -18 Nov. 19 Nov. 20 Nov. 21 Chapter 19 Temperature Nov. 22 Nov. 23 Thanksgiving break Nov. 24 Thanksgiv ing break Nov. 25 Thanksgiving break Nov. 26 Nov. 27 Nov. 28 Chapter 19 Temperature Nov. 29 Nov. 30 Chapter 20 Thermodynamics

Monday Dec. 5 Final 9 AM (section A) Dec. 12 Winter break Tuesday Dec. 6 Wednesday Dec. 7 Thursday Friday Saturday Sunday Dec. 1 Dec 2 Catch-Up & Review Dec. 3 Dec. 4 Dec. 8 Dec. 9 Dec. 10 Dec. 11

TUTOR & HOMEWORK SESSIONS (Room & times to be announced… Stay tuned!!) Monday Tuesday Wednesday Thursday Friday Saturday Sunday The tutors: (i) (iii) Tutor sessions in semesters past were very successful and received high marks from students. All students are encouraged to take advantage of this opportunity.

Part 1: Mechanics • Concerned with the motion of objects (larger than atoms; slower than speed of light) • Conservation of energy • Conservation of momentum • Rotation of objects • Oscillations • Thermodynamics

Chapter 1: Physics and Measurement Reading assignment (reading quiz this Friday!): Chapters 1 and 2 Homework 1: (Chp 1) Q 5, 12, 17, 22, 52 (Chp 2) Q 15 Due: Monday August 29, 2005, 10 pm Check out Web. Assign: http: //www. webassign. net/

Units In mechanics the three basic quantities are: • Length (we will use the ________; Paris, 1792) • Mass (we will use the _________ Paris, 1792) • Time (we will use the ______________) And combinations of these units (e. g. unit of velocity: m/s) • These are units of the SI (Système International) system that is used throughout the world in the Sciences.

Changing units We need to apply conversion factors (a ratio of units that are equal to one) to get the right units Black board example 1. 1 A snail crawls along with a speed of one inch per minute. What’s its speed in m/s? See appendix for conversion factors

Significant figures A significant figure is a reliably known figure. Give answers in significant figures. black board examples. When adding or subtracting numbers, the number of decimal places in the result should equal the _____ number of decimal places of ______ term in the sum. When multiplying several quantities, the number of significant figures in the final answer is the same as the significant figures in the _______ accurate of the quantities being multiplied. (Same for _______)

Factor Name Symbol 1024 yotta Y 1021 zetta Z 1018 exa E 1015 peta P 1012 tera T 109 giga G 106 mega M 103 kilo k 102 hecto h 101 deka da 10 -1 deci d 10 -2 centi c 10 -3 milli m 10 -6 micro µ 10 -9 nano n 10 -12 pico p 10 -15 femto f 10 -18 atto a 10 -21 zepto z 10 -24 yocto y The 20 SI prefixes used to form decimal multiples and submultiples of SI units (from NIST). Black board example 1. 2 DNA has a diameter of 2 x 10 -9 m. How many nanometer is that?

The building blocks of matter Atomic force microscope image of gold surface • All matter consists of atoms (greek: atomos = not sliceable) • All atoms consist of a nucleus surrounded by electrons • Nuclei consist of protons and neutrons. The sum of neutrons and protons in the nucleus of a particular element is called the atomic _____ of the element. The number of protons is called the atomic ______. • Protons and Neutrons consist of Quarks (six different varieties) Atomic mass of an element: average mass of one atom in a sample of the element. Unit of the atomic mass: 1 u = 1. 66· 10 -27 kg One atom of the _______ isotope (12 C) has a mass of 12 u.

Density: Density r = ________ For example: Density of matter depends on: Aluminum: 2. 7 g/cm 3 • The atomic _____ of the individual atoms Lead: • How tightly atoms are packed 11. 3 g/cm 3 Black board example 1. 3 (problem 20) Gold, which has a mass of 19. 32 g for each cubic centimeter of volume, is the most _____ metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If 1. 000 oz of gold, with a mass of 27. 63 g, is pressed into a leaf of 1. 000 µm thickness, what is the area of the leaf? (b) If, instead, the gold is drawn out into a cylindrical fiber of radius 2. 500 µm, what is the length of the fiber?

Dimensional analysis Dimensions (In this case we mean the units of a physical quantity) can be treated as _______ quantities. • Always do a dimensional analysis when solving problems. Black board example 1. 4 Newton's law of universal ________ is represented by the following equation. F = GMm/r 2 Here F is the gravitational force, M and m are masses, and r is a length. Force has the SI units kg · m/s 2. What are the SI units of the proportionality constant G?

Problem solving: • Always make sure you use the right _____ (conversion may be necessary) • Always do an _______ estimation (Ask yourself: “Does the number I’m getting make sense? ).

Review: • Length, mass, time • SI units • Dimensional analysis, conversion of units • Order-of-magnitude estimates • Significant figures