7B-W11-Lecture 3

7B-W11-Lecture 3 - Physics 7B Sections A B C& D...

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Unformatted text preview: Physics 7B Sections A, B, C & D Professor Lawrence B. Coleman 1 Lecture 3- Moving on to Electric Current Electrical Circuits Physics 7B Winter 2011 - Lecture 3 Quote of the Week: “ We believe that electricity exists, because the electric company keeps sending us bills for it, but we cannot figure out how it travels inside wires” -- Dave Berry. Physics 7B Winter 2011 - Lecture 3 2 We can also lose energy to sound when flow is turbulent. Laminar flow Turbulent flow Examples are in the details of airplane wings and the blood Energy Conservation in Fluids Physics 7B Winter 2011 - Lecture 3 3 We can also lose energy to sound when flow is turbulent. Check out heart sounds and information on how the doctor measures your blood pressure in the Smart Site – Physics in the Real World Folder Energy Conservation in Fluids Physics 7B Winter 2011 - Lecture 3 4 Similar Physics to fluids, but some differences – that make life easier! What is flowing is charge. It has no real density and not much Kinetic Energy, so…. Δ V = ε- IR The Flow of Electric Charge Physics 7B Winter 2011 - Lecture 3 5 Pipe Wire Fluid Electrons (charge) Head Voltage Flow Rate Current Pump Battery Friction Resistance Fluids Electricity...
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7B-W11-Lecture 3 - Physics 7B Sections A B C& D...

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