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Good Luck! Exam 1 Review Phys 222 – Supplemental Instruction TUESDAY SESSION AS NORMAL – Q AND A THURSDAY SESSION CANCELLED TO ACCOMMODATE EXAM REVIEW

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Exam Overview About 1/3 of the problems will stress conceptual understanding Don’t waste too much time on these Think carefully! Remaining 2/3 will be numerical problems to test ability to apply these concepts Know your formula sheet Rule out wrong answers 25 + 2 Questions, 2 hours (4.4 minutes/problem)

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Prepare yourself Practice Problems!! Practice tests (11 of them, with solutions) It’s really easy to think you understand a concept, but then find out you can’t solve a problem on it. If you miss a problem, read the solution, then do it again later without the solution. Old quizzes (make sure you understand mistakes) Book problems (have answers in the back) SI worksheets Recitation problems Concepts Textbook Online Summaries Lecture Slides

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Do you know all the following?

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Fluid Statics Density, pressure Buoyancy, surface tension Archimedes' Principal Fluid dynamics Bernoulli’s equation Pascal’s law, continuity equation Laminar flow

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Electric Charge Coulomb’s law Charged objects’ behavior Conductors, Insulators, Polarization Electric Charge Interaction Electric field, field lines Dipoles, dipole moment Flux Integral Representation Gaussian Representation Applying Gaussian surfaces to objects

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Electric Potential (vs) Electric Potential Energy Equipotential Diagrams Calculating potential at various points Movement of charge in the presence of a potential. Relation to other types of energy

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Capacitance How various changes affect capacitance What are their uses Connections in circuits Parallel vs series Equivalent capacitance Dielectric additions Current Relation to other concepts Resistance Connections, much like capacitors

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Here we go! LOTS OF TEST PROBLEMS WITH TIPS SPRINKLED IN

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Useful tip

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Fluids!

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Electric Force Electric Field Electric Potential Energy Electric Potential Difference (voltage) Divide by q Field descriptions: Do not depend on recipient particle/charge. Recipient charge -- q Forces and energy: Do depend on recipient and emanating charge. Emanating charge -- Q

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Field lines! Electric field lines go from + to - Electric field lines end at negative charges. Line density indicates field strength

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Dipoles

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Dipole Moment and Torque

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Steps in solving GL Problems Draw a picture. Pick a good Gaussian surface. Symmetry! Write expression of integral flux notation. (if E || A then, EA) Write expression for Gauss’s Law involving enclosed charge. Set the expressions equal and eliminate variables to solve.

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Capacitance and Energy

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Combining components Capacitors Resistors Addition T = X1 + X2 +… Inverse Addition 1/T = 1/X1 + 1/X2 +… Addition T = X1 + X2 +… Inverse Addition 1/T = 1/X1 + 1/X2 +… Parallel Series

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Hodgepodge OF RELEVANT QUESTIONS

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