Exam #1 Physics 202
Exam #1 Physics 202 Chem 106
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This 2 page Study Guide was uploaded by Maranda Butterfield on Tuesday February 3, 2015. The Study Guide belongs to Chem 106 at Washington State University taught by Nathalie Wall in Fall 2015. Since its upload, it has received 279 views. For similar materials see Principles of Chemistry II in Chemistry at Washington State University.
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Date Created: 02/03/15
Study Guide For Test 1 Physics 202 with Smith Spring 2015 Important Equations 1 A Coulomb s Law F q1 er QE 411160 139 1 represents the direction in which the force is going if there is an angle between the two objects it will need to be considered otherwise it will not matter 1 quot Electric Field of a Point Charge Equot 12 411160 139 Electric field of something else can be that formula integrated and dq instead of q Gauss s Law E A Qinclosed 60 Linear Charge Density Mlamda Surface Charge Density 17eta Dipole Moment Q vect0r from to charge Work W f F d3 Which in cases where F is constant and in the same direction will just be FS S being the length in which the force was happening Kinetic Energy K mvz Potential Energy of Two Point Charges U L 41160 139 q U Electric Potential of a Point Charge V 1 41160 139 Q 1 dq 411160 139 Electric Potential of Not a Point Charge V f Important Concepts Field lines always go from positive to negative Charge of an electron is 160X103919C Mass of an electron is 911X10 31 Both of these values will be given in test Law of conservation of charge net charge of the universe stays the same In conductors charges can move around freely In insulators they can t really They can move some but not nearly as well as in conductors The ux is the number of field lines through a surface Change in potential is equal to negative of the work done Change in potential is also equal to change in kinetic Sometimes it is helpful when having to integrate or such to find the relations so that substituting can happen for the variables to all match d dx Exz q or anclosed VInclosed Q L QTotal VTotal For shells of charge the inside potential will always be the same Use the radius of the shell However as you move farther away the potential will lessen use the length away from the center Special for a Parallel Plate Capacitor E 61 g 2 ES 2 V s is distance between plates 0
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