UH PHYS 1302 - Exam 2 Review (30 pages)

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Exam 2 Review



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Exam 2 Review

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exam 2 review


Pages:
30
School:
University of Houston
Course:
Phys 1302 - Introductory to Physics II

Unformatted text preview:

Exam 2 Review 23 1 Induced Electromotive Force EMF can be induced in second circuit if current in the first is changing When current in the first is stable 0 EMF in the second Magnitude of the induced current is proportional to the rate at which the magnetic field is changing 23 2 3 Magnetic Flux and Faraday s Law of Induction 23 4 Lenz s Law An induced current always flows in a direction that opposes the change that caused it If magnetic field faces one direction Magnetic field created by the induced current will be the opposite direction 23 5 Mechanical Work and Electrical Energy Induced EMF 23 6 Generators and Motors Motor Generator 23 7 Inductance 23 8 9 RL Circuits and Energy Stored in Magnetic Field 23 10 Transformers Can be used to change voltage supply 25 1 The Production of Electromagnetic Waves Electromagnetic waves EM are produced by oscillating charges Electric E and Magnetic B fields oscillate perpendicular to each other Both oscillate perpendicular to the direction of propagation 25 2 The Propagation of Electromagnetic Waves All EM waves in vacuum propagate at same speed Move more slowly in medium Doppler effect occurs when waves reflect from object sign for approaching sign for receding 25 3 The Electromagnetic Spectrum In vacuum relation between frequency f and wavelength given by The full range of frequencies of electromagnetic waves is called the electromagnetic spectrum 25 4 Energy and Momentum in Electromagnetic Waves Electric and magnetic field energy densities are equal in EM wave Given by Intensity Momentum 25 Polarization Polarization refers to direction of oscillating electric field 26 1 The Reflection of Light The law of reflection states that the angle of incidence equals the angle of reflection 26 2 Forming Images with a Plane Mirror Mirror image is upright but appears reversed right to left Mirror image appears to be the same distance behind the mirror that the object is in front of the mirror Mirror image is the same size as the object



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