Week 1 (Lecture 1 & 2) PHYS212
Week 1 (Lecture 1 & 2) PHYS212 PHYS 212
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This 4 page Class Notes was uploaded by Veronica Canarte on Monday September 5, 2016. The Class Notes belongs to PHYS 212 at Towson University taught by Katarzyna A. Oldalk in Summer 2016. Since its upload, it has received 53 views. For similar materials see Gen Physics II ; NON Calc-based in Physics at Towson University.
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Date Created: 09/05/16
8/31/16 Lecture 2 Wednesday, August 31, 2016 Static Electricity, Conductors & Insulators Repel Attract • Charge 2 types of charges or Lots of charged particles: Ions: have excess of either A) protons or B) electrons - Neutral particles don’t interact with charges • If you rub objects together you can give a charge in the • Conductors vs Insulators objects e- = shorthand for electron One object will gain "Conduct" electricity ; Charges cannot electrons & the other (-) charges move move easily around. • Fundamental change How much charge is in one e- will lose electrons (spread) very easily. ex) ex) coated wires, qe= e = 1.6 x 10 ^ -19 C salt water, metals plastic, cloth Electrons get Electrons can move around slowed/stuck C = Coulomb ; the unit for electric charge super easy • Conservation of charge Total charge is constant in any process • Charging an object by contact • Charging and object by induction Object (charged) never touches "spheres" Pulls A) charged rod pulls the (e-) towards the contact point & repels the (+) Revisit these because repels towards the opposite they will help with end. problem solving. REVIEW: in CH 18.2 (pg. 700-702 in pdf txtbook) and in the lecture PowerPoint - Earth is "conductor - ish" ; it is grounded = Ground Earth is so big - it just absorbs charges. Basically , grounding eliminates/drains charges
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