Physics 1AL Faculty Instructor: Dr. Michael Anderson mganderson@physics.ucsd.edu Lab Manual/ Syllabus Link for first week: on WebCT OR http://physics.ucsd.edu/students/courses/ winter2009/physics1labs/ Physics 1A Lecture 1A "You do not really understand something unless you can explain it to your grandmother." --Albert Einstein Introduction Welcome to Physics 1A! Physics 1 is a three quarter course designed as an introduction into basic physics for students in the biological sciences. Physics 1A in particular will focus on motion, kinematics, and Newton’s Laws. Please note that the lecture and the lab are separate courses with separate instructors. Introduction Who is this guy? I am Professor Frank Wuerthwein. I am a faculty in the Physics department. I have taught Mechanics a few times elsewhere. This is the 1st time I teach this particular course! My research is in experimental particle physics Acknowledgements I follow strictly the course material put together by Dr. M.G. Anderson. Many thanks, Mike ! Though, I might skip lecture demos in favor of doing example problems in class. Less entertainment, more drill, and maybe better grades as a result ? Introduction My office is located in 5515 Mayer Hall. The TA for this course is: Agnieszka Cieplak . Updated Map My office is on the 5th floor, about here Administrativa The website will be an extremely useful place. There you have: The class syllabus, incl. academic calendar. The problem sets Current announcements Office hours and Problem Sessions Lecture PDFs http://physics.ucsd.edu/students/courses/winter2009/physics1a Administrativa The book we will be using is: Serway and Faughn, College Physics, 7th Edition, Vol. 1 Thomson/Brooks/Cole The list of problems for the quarter is on the website. They are divided into: Easy, Medium, and Hard. Solutions will be posted on the website before the quiz. Administrativa There is a lot of help available for you to complete your homework and understand the concepts: Problem Solving Session (TBA) First one: TBA (probably next week) Physics Dept. Tutorial Center runs from Sunday-Thursday from 3:00pm-8:00pm 2101 Mayer Hall. There are also office hours. They will be posted on-line when they are all determined. Administrativa Grading: Your grades will be determined by your performance on the quizzes and the final exam. There are 5 quizzes: F 1/23 M 2/2 F 2/13 F 2/27 M 3/9 Your lowest quiz score will be dropped. The cumulative final exam will be Friday, Mar. 20th from 11:30am-2:30pm. Administrativa Your grade will be calculated by: 60% Quizzes + 40% Final. I will stick to the grading scale announced today. I hate it when people try to negotiate grades with me. If you have a grading issue, then talk with the TA first. If you can’t work it out with the TA then both of you come to me together, and chances are you’ll get a worse grade than you started with. Administrativa Your grade will be determined by using the following scale: Between 85% and 100% => A Between 70% and 85% => B Between 55% and 70% => C Between 40% and 55% => D Grade below 40% => F What is science? Question: At what temperature is water at its greatest density? Answer: 4o C. Question: How long does it take light from the Sun to reach Earth? Answer: It takes slightly over 8 minutes (8.3 minutes). Question: What is the half-life of Uranium–238? Answer: 4.46 billion years. What is science? Are memorizing facts and figures, the basis of science? The answers to the previous questions are merely terminology and facts. Terminology and facts are necessary to science but not the key. What is science? The scientific method is designed to break down knowledge and data so that it can be studied and reproduced. 1) Make an educated guess (or hypothesis) to solve an existing problem. 2) Predict consequences that can be observed to test if the hypothesis is right. 3) Perform experiments or tests to find observations. 4) Retest many times until a general rule has been found regarding your hypothesis. What is science? Specifically in this class, we will be using the scientific method in conjunction with the lab class. I will present ideas and concepts in lecture. You will test the validity of those concepts in lab. If you ever truly doubt the validity of any concept I present, then come up with a test to disprove it. Physics: Friend or Foe? How would you describe what Physics is to your grandmother? What immediately comes to mind when you hear the word “Physics?” Physics: Friend or Foe? Technically, Physics is the study of the symmetry of the universe. Basically it answers the question of what is equivalent in nature. Physics looks at different forms of energy and matter and studies how they interact. This means that Physics ranges from the tiniest objects in the universe (quarks, gluons, neutrinos) to the largest objects in the universe (black holes, neutron stars, galaxies). And everything in between. What is Mechanics? A set of very simple ideas. Ideas, that can be used in conjunction with calculus and linear algebra to predict the outcome of a wide range of “experiments” and natural phenomena. You haven’t understood the concept if you can’t compute answers to problems. Just because you can compute, doesn’t mean you understood! You will test the validity of those ideas and concepts in the lab. For Next Time (FNT) Download and read syllabus Read Chapter 1 Start on the homework for Chapter 1 When is the first quiz? In two and a half weeks (Friday, 1/23). It will cover chapters 1,2,3.