General Physics John O. Curtis, PhD, PE 302 Hederman, x3287

“…an appreciation for the glories of science is a joyful trait for a good society. It helps us remain in touch with that childlike capacity for wonder, about such ordinary things as falling apples and elevators, that characterizes Einstein and other great theoretical physicists.“ 1 1 Walter Isaacson, “Einstein, His Life and Universe,” Simon & Schuster, 2007

Elements of Your Final Grade Exams75% Lab reports20% Homework 5% Flattery/Guinness 0%

PHY GENERAL PHYSICS Fall Semester – 2012 Hederman Science 306 MWF 10-10:50;11-11:50 Description: 4 semester hrs. Prerequisites: MAT 102 or equivalent. Topics covered will include mechanics (motion and forces), fluids, vibrations, sound, heat, and thermodynamics. This is the first semester of a one-year, algebra-based physics course (with laboratory). Instructor: Dr. John Curtis. Office: Hederman Science 302. Office telephone: Cell phone: Office hours: open-door Text: PHYSICS, Douglas C. Giancoli, sixth edition, Prentice Hall Examinations and Homework: Four or five examinations will be given during the semester. Normally given on Fridays, they will be untimed (within reason). You will be allowed to use an equation sheet. Exams will usually consist of complete- solution word problems. The final exam will be comprehensive. Homework will be collected following the completion of each chapter.

Grading: Exams will constitute 75% of the final grade, labs will account for 20%, and homework will account for 5%. The course grade will be assigned using a 10- point scale. Labs are not an afterthought! Each student must earn an average of 12 points (out of 20 given) for each lab in order to pass the course regardless of your overall average. Furthermore, you must have at least a 60 average on your exam scores to pass this course. Attendance: The University policies as stated in the current catalog are followed. Specifically applied to this course, credit can not be given if a student has missed 12 or more classes (in other words, an automatic grade of F). Missed Exams: If you know you must be out on an exam day (e.g., planned school function requiring travel), please inform me ahead of time and schedule a makeup. If you cannot take an exam due to illness or other unplanned problems, you are expected to schedule a makeup as soon as possible. Important Dates: Aug drop cutoff with 100% refund Sep 3 -- Labor Day holiday Oct fall break Oct drop cutoff Nov Thanksgiving holiday Dec 5 – last day of classes Dec 10,12-- final exam

Preliminaries A little history A little math

Some History Before 1900 Classical mechanics Electricity and magnetism Optics Galileo, Newton, Maxwell After 1900 Quantum mechanics Relativity Planck, Einstein

Some Math Why? A common language for all scientists and engineers A tool for making predictions of events under various conditions What do you need to know? Algebra Trigonometry

A Wakeup Call

#1x = 3.84 or 3.8 #2θ = 67.9 deg or 1.19 rad #3z = 2.79 and #4x = -3 #5w = -0.26

A Wakeup Call RyRy RxRx R │R│= 14.5 m Ө = 63° R x = ?? R y = ?? Ө

3-4 Adding Vectors by Components If the components are perpendicular, they can be found using trigonometric functions.

3-4 Adding Vectors by Components The components are effectively one-dimensional, so they can be added arithmetically:

And Another Wakeup x = vt + x 0 Solve for t when x 0 = 5 cm, x = 22 cm, and v = 5.8 cm/s

And Another Solve for d i when d o = 3.2 m and f = 2 cm

And Another y = y 0 + v 0 t + ½ gt 2 Solve for t when y 0 = 0 m, y = 40 m, v 0 = 75 m/s, and g = -9.8 m/s 2

Some mathematical models 1-d kinematics - solution of a quadratic 1-d kinematics - solution of a quadratic 2-d statics - a friction problem 2-d statics - a friction problem

More Models Geometric optics - the mirror equation Geometric optics - the mirror equation Another optics problem – Snell’s Law Another optics problem – Snell’s Law

Linear Functions

Transition to the Lab Mass Density Mass Density

A Plot of Mass vs Volume