Class2HO - Class 2 Physics Math and the Fundamental...

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Class 2 Physics, Math, and the Fundamental Interactions Physics 106 Fall 2011 Press CTRL-L to view as a slide show.
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Learning Outcomes After today’s class you should be able to answer these questions: I What is science? What is physics? I What is meant by physical "law"? I How does physics make use of models? I What do equations tell us? What don’t they tell us? I What math will I need for this course? I What are the four fundamental interactions of nature? I What two kinds of models do we use to describe forces at a fundamental level?
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Some Class Details
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If you missed last time... I Look over the slides for Class 1 on the course website.
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What you should have done already I Obtained a CID I Bought an i-Clicker I Registered your i-Clicker number on the course website I Read the Course Outline
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What should you do now? I Submit Homework 0 (no credit) by tomorrow I Do the reading for Class 3 I Start working on Homework 1 (due next Thursday)
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Science, Physics, and Equations Some practical suggestions for learning and doing physics
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What is science? I "Science" means "knowledge" I How does scientific knoledge differ from other kinds of knowledge? I Science is based on observation of what happens around us I It describes I It explains I It predicts
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What is physics? I "Physics" means "nature" I Physics is quantitative. It iincludes everything we can observe or measure I Biophysics I Geophysics I Astrophysics I Physical chemistry I Physics ususally deals with force, motion, and energy
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Fundamental Quantities Some of the fundamental things we measure are I Position I Time I Mass I Charge
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Derived Quantities We define many other quantities in terms of fundamental quantities and other derived quantities I Speed I Momentum I Acceleration I Force I Work I Potential energy
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