PHYS 1062 Lecture Notes - Lecture 1: Superconductivity, Electrical Resistivity And Conductivity, Lightning
Document Summary
Question: gasoline transport trucks sometimes have chains that hang down and drag on the ground at the rear end. We will address these questions after we have studied next several chapters: origin of electric charges. -> unit of charge (1. 6x10-19 c: electrical conductivity. - > conductor, insulator, semiconductor, superconductor: unlike charges attract; like charges repel. 21-4, 21-5: -- > charged by conduction. -> ground : answer some questions (mentioned on aug. 27, monday, electric force: coulomb"s law: - > direction? (first step: draw arrows to show directions) Take absolute values of q1 and q2 to do calculation. -> vector addition (graphical method and/or component method) -> three or more than three charges (vector addition). Problems: 3, 6, 11, 13, 25, 42, 63. *** lightning occurs when charges jump from one cloud to another or between a cloud and the earth.
