PHY132_L02 - Classical Physics II Classical Physics II...

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lassical Physics II Classical Physics II PHY132 Lecture 2 The Electric Field Lecture 2 1 01/27/2010
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PHY132 Spring 2010 nformation on Course pages: • Information on Course pages: – Black Board: PHY132 Spring 2010 – Physics Dept: http://www.physics.sunysb.edu/physics / Æ Undergrad Æ Courses Æ Rijssenbeek –D i r e c t : http://sbhepnt.physics.sunysb.edu/~rijssenbeek/PHY132_S10.html • Available online: schedule, syllabus, Lab and Recitation section, Exams, Grades, etc. • Required: – Textbook: D. Giancoli “Physics for Scientists and Engineers” 4 th Edition • Buy also the www.MasteringPhysics.com access key for Online Homework • valid for 3 semesters… – RF Clicker (Bookstore or www.eInstruction.com ) • Stony Brook standard – can be used for other courses • Register your clicker via Blackboard within 14 days. egister your clicker on Blackboard to see your grades! Register your clicker on Blackboard to see your grades! – Scientific Calculator (Trig functions, exponentiation, roots, logarithms) – Laboratory Note Book – Internet Access (e.g. in the Help Rooms, Physics A-level) Lecture 2 2 01/27/2010
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Recap: Coulomb Force he Coulomb force is the electrostatic (electric) force • The Coulomb force is the electrostatic (electric) force between two point charges Q 1 and Q 2 , separated by a center-to-center distance r 12 , which points from Q 1 to Q 2 . The Force from Q 1 on Q 2 is then: l 12 2 1 2 1 (Coulomb's Law) 4 C QQ r πε = Fr ote that this is milar to gravity etween two masses nd 01 92 2 1 2 2 2 0 0 1 8.998 10 Nm /C ; 8.85 10 C /(Nm ) 4 ε = × – Note that this is similar to gravity between two masses M 1 and M 2 : ote that the masses are the gravitational “charges”! (BUT: only ositive l 2 G MM G r =− • note that the masses are the gravitational charges ! (BUT: only positive mass exists)
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This note was uploaded on 04/14/2010 for the course PHY 132 taught by Professor Rijssenbeek during the Spring '04 term at SUNY Stony Brook.

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PHY132_L02 - Classical Physics II Classical Physics II...

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