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magnetism

E&M review

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Physics
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Physics
Electromagnetism
Physical quantities
Introductory physics
Electrodynamics
Electrostatics
Magnetic field
Capacitor
Lorentz force
Maxwell's equations
magnetism
Magnetic flux

Physics C Electricity& Magnetism Review Charge Net ? charge: excess electrons Net + charge: excess ?holes? SI unit: coulomb (C) Quantum of charge: the proton charge (e) the electron charge (-e) e = 6.02 ? 10-19Coulombs Conservation of Charge The net charge in any process or reaction remains unchanged. Coulomb?s Law Calculates magnitude of force between charges Force is repulsive if charges have the same sign. Force is attractive if charges have opposite signs. F = kq1q2/r2 F: force (N) k: constant 9.0 ? 109 N m2/C2 q1, q2: charges (C) r: distance between charge centers (m) NOTE: k = 1/(4??o) where ?o = 8.85? 10-12 C2/ N m2 Multiple Forces on a Charges Ftot = ? Fi

Physics AQA GCSE A/A* Revision Notes

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Physics
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Electromagnetism
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magnetism
Nikola Tesla
Transformers
Coil
Helices
Electromagnet
Magnetic field
Electric motor
Magnet
Camera lens

Physics-p3 1.1 X-Rays Part of the electromagnetic spectrum; they have a high frequency and short wavelength. X-rays are used to form images of bone on photographic film to check for fractures and dental fractures. This is done because they are transmitted by healthy tissue and absorbed by bone. X-rays affect photographic film in the same way as light. Charge-coupled devices (CCDs) are used to form electronic images of the body. X-rays are used to make images and CT scans (cross sections through the body). They are also used to destroy tumors at or near the body surface. Precautions must be taken when using X-rays as they cause ionization and can damage living tissue. Workers should wear film badges (to monitor exposure) and use lead screens to shield them when possible.

Notes

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Chemistry
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Chemical bonding
Chemistry
Pi bond
Triple bond
Sigma bond
Double bond
Molecular orbital
Bond
Chemical bond
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molecular
magnetism

Name: _________________________________ What You Need To Know for the Chemistry Regents Exam The Test The Chemisty Regents Exam is broken down into three sections: Part A: 35 mulitple choice questions from all units covered over the course of the school year. Part B: Approximately 25 questions, with a mix of short answer and multiple choice. Questions focus on the Reference Tables, graphing, and laboratory experiments. Part C: Approximately 15 short answer questions, most broken down into smaller parts. This is often an eclectic, unpredictable mix of questions from various units, and may demand students write short paragraphs, use equations and reference tables, or draw graphs and diagrams in order to correctly answer the questions.
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