09:28.pdf

# 09:28.pdf

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Welcome to Physics 122 122A: Paul A. Wiggins 122B: Miguel Morales 122C: Arka Majumdar Content: Electricity & Magnetism Format: Active Learning (Learn from Participation) » PreLectures & Checkpoints (FlipIt Physics) » Lectures (Presentations, demonstrations & clickers) » Homework (Webassign) » Tutorials (concepts in depth) » Labs (hands-on interactions with the phenomena) Here

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Web and Grading Policy Bookmark our Homepage (on canvas). Syllabus Links to other aspects of course (FlipIt Physics, WebAssign, ) PDFs of Lecture slides will be linked there after each lecture Policy statements Exam prep / follow-up items Grading Policy (just like 121). Grade is achievement based . Earn the points, get the grade. Many points are earned by just doing the work (HW, Clickers, FlipIt Physics, Lab work ) Midterms (best 2 of 3) 35% 350 Final Exam 24% 240 Lab Section 13% 130 Tutorial Section 9% 90 Lecture HW 9% 90 FlipIt Physics 5% 50 Clickers 5% 50 1000 point system

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FlipIt Physics I “extended” deadline until Friday
The World According to Classical Mechanics (Physics 121) Objects Specified by geometry and mass Forces Gravity: Others: Tension, Normal, Friction F = G m 1 m 2 r 2 m 1 m 2 r Space and Time Euclidean with Galilean Invariance “ordinary” 3D space; “slow” velocities

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E&M: It Wasn't That Easy Greeks amber (fossil resin of pine trees) known as νλεκτρον (elektron). eg Plato (4th century BC) "wonderful attracting power of amber and the Heraclean stone" Gilbert (De Magnete .. 1600) Electrical effects due to emission of a material effluvium.. no action at a distance DuFay (1733) Two distinct electricities: vitreous and resinous Like electricities repel; unlike electricities attract Franklin (1750) One electrical fluid: excess positive (vitreous) deficient negative (resinous)
A scientific revolution… Physics in 1800s: Electricity: Electric fish, lightning & static electricity. Magnetism: Magnetite & the compass Light (& other EM radiation)

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… the great unification 1820: Electricity + Magnetism = Electromagnetism 1865: Electromagnetism + Light 1905: Newton Special Relativity James Clerk Maxwell Hans Christian Ørsted Albert Einstein
Where Does Our Study Start? The Phenomena Fur on rubber rubber negative Silk on glass glass positive The Concept Electric Charge Attribute of body Unlike charges attract Like charges repel

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The force on a charge due to another charge is proportional to the product of the charges and inversely proportional to the separation squared.
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