Lecture+02+jan10 - Lecture #2 The Electric Field Science...

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Unformatted text preview: Lecture #2 The Electric Field Science Learning Center (SLC) Join a peer-Led Study Group for PHYSICS 240 Small group of 8 motivated students studying together Two hour weekly meetings, located in an SLC alcove or central campus classroom Review material, solve problems, discuss concepts, ask questions, and prepare for exams Led by trained facilitator who has taken the class successfully, who will guide and encourage group discussions Registration opens for PHYSICS 240: 4 pm Wednesday, Jan 11 online at: www.lsa.umich.edu/slc 9 groups offered for PHYSICS 240 Groups begin meeting: Sunday, Jan 15 Email questions to: slcstudygroups@umich.edu Last lecture-- Coulombs Force Law Coulombs Force Law (1784) 2 kinds of charge, force on line between, inverse square law With k=1/(4 o )=8.99x10 9 Nm 2 /C 2 Remember: force is a vectorwe need to specify which charge we want to know the force on. Real power of Coulombs Law-----The principle of Superposition ... F F F F 41 31 21 1 + + + = 2 2 1 r q q k F = e=1.6 x 10-19 C Question #1...
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Lecture+02+jan10 - Lecture #2 The Electric Field Science...

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