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Physics Unit 4 Cheat Sheet

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Summary Sheet/Cheat Sheet which can be used for either preparation, or as an actual cheat sheet

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4 Pages Partial Study Notes > 2 Years old
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Physics Unit 4 Cheat Sheet
Topics this document covers:
Physics Electromagnetism Force Electrodynamics Audio engineering Electric power conversion Wavelength Waves Wave Photon Loudspeaker Electromagnetic radiation
This is a Partial Set of Study Notes

Partial Study Notes typically cover only single topics of a unit of study or do not cover multiple topics in significant detail. They are generally less than 20 pages in length.

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Topics this document covers:
Physics Electromagnetism Force Electrodynamics Audio engineering Electric power conversion Wavelength Waves Wave Photon Loudspeaker Electromagnetic radiation
Sample Text:
com Magnetic field B (Unit: tesla (T); or weber per square metre (wbm-2) ): S N S Aust N I × × × • • • × × × • • • × × × I • • • I Use right-hand grip rule to find direction of B. Magnetic force on current-carrying wire: F I × × × × × × F = BIL × × × B Direction of F L (Right-hand slap rule) Magnetic force on current-carrying coil of n loops: Zero force × × × × L × × × × × × × × r Force into page Zero net torque Force out of page on coil Net clockwise torque on coil (view from above) Refer to above diagrams, the two forces (each F = nBIL in and out of the page) exert a turning effect called torque (τ = rF) on the coil causing it to speed up its rotation in the first quarter turn. In the second quarter turn the torque is in the opposite direction causing the coil to slow down. In a simple DC motor, the direction o...
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