PHYS 2002 Lecture : Lecture2
Document Summary
It may still change slightly during this week! Homework: wiley plus: will be posted soon, orion adaptive learning engine. We will use turning point clickers in class: for quizzes & example problems, starting today. Note: final date for students to drop a course without receiving a grade of w for the fall 2016 semester is august 30. Last time: flow of charge occurs when electrons in a material become detached from atoms: conductors: charge moves easily through conductors copper, silver, aluminum (metals) Excess charge can move to the interior: insulators: charge does not move easily wood, paper, rubber, plastic. Direction: coulomb"s law: force between point charges. Point charges: much smaller than the distance between them. F = k k is a constant of nature q1 q2 r 2. For example, if: q1 > 0 and q2 > 0. For example, if: q1 < 0 and q2 > 0 q1. 18. 5 coulomb"s law: strength (magnitude) of the force: f = k.
