HW _1 P2213 S10

# HW _1 P2213 S10 - Physics 2213 Read Homework#1 Spring 2010...

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Physics 2213 Homework #1 Spring 2010 Read: Chapter 21: intro., sections 21.1-4, 21.5 (thru p. 729), 21.7 (Can you do Ex. 21.15 on p. 738 by the common denominator method?) Basic Ideas: Electric Charge & Conservation of Electric Charge Electric Force & Coulomb's Law Vector Fields & the Electric Field Superposition Principle Math Skills: Geometry, Trigonometry, Symmetry Principles Vector Analysis (especially addition by geometry & components) Asymptotic and limiting power law forms for functions Learning Goals: (Be sure you understand where and how each goal applies to homework, discussion, lecture, and lab activities.) * Determine the magnitude, direction, and components of the net electric force on any specified point charge due to a collection of other point charges by applying Coulomb's Law and the Superposition Principle to electric force vectors. * Explain how a neutral object can become electrically polarized by a nearby charged object, how a neutral object can experience a net electric force due to a charged object, and how a neutral object produce an electric force on a charged object. * Distinguish between electric force and electric field, and explain how they are related. * Determine and sketch electric field vectors obtained by vector constructions using the Superposition Principle for these charge distributions: point charge (+ or -), electric dipole (+ - pair), 2 like charges (both + or -). * Conceptually translate an equation for electric field as a function of position into a graph (without doing detailed numerical calculations). * Determine the asymptotic limiting forms of the electric field as a function of position at small and large distances from a set of electric charges, and tell what these forms mean physically. * Show that algebraic and numerical results have correct units and are physically reasonable. For extra practice: Chap. 21: Q's #Q21.1-7, 11-22 (not turned in or quizzed) E's & P's: #21.7, 11, 21, 25, 27, 49, 73, 81 To be prepared for a Quiz on Wednesday-Friday, Feb. 3-5, at your 2nd weekly Discussion *** FOR EACH HW ASSIGNMENT: Be sure to organize your work neatly so that YOU have a clear idea of what the problem and solution entail. Include carefully drawn and labeled diagrams to assist you and illustrate your reasoning. Be sure you understand thoroughly what you did and can identify each basic principle you used and tell why you used it. Be sure you can repeat and explain your solutions and reasoning without referring to your HW paper or other reference materials. Be sure you can provide arguments to check and support the physical and mathematical validity and correctness of your solutions. *** #Q21.10

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## This note was uploaded on 03/07/2010 for the course PHYS 2213 taught by Professor Perelstein,m during the Spring '07 term at Cornell.

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HW _1 P2213 S10 - Physics 2213 Read Homework#1 Spring 2010...

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