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Chapter 5: Energy

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Mechanical and Fluid I Mechanical
and Fluid II
Electrical Thermal

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5.1  Energy in Mechanical and Fluid Systems I

Work, Energy, and Power

This Physics Classroom site includes tutorials on potential energy, kinetic energy, mechanical energy, and the work-energy theorem. Included in each section are self-check questions.

Rotational Kinetic Energy and Angular Momentum

This site of lecture notes on rotational kinetic energy and angular momentum includes parallels between straight-line motion and rotational motion. It also includes an example problem comparing the two.

Billiard Ball Simulation

Simulation of a pool ball colliding with a rail. The total mechanical energy is equal to the sum of the rotational and translational kinetic energies. The effect of the impulse exerted by the rail depends on where it hits the ball. Along with the change in linear momentum, the force exerted by the rail can result in a torque, affecting the angular momentum of the ball.

Energy

This topic stresses mechanical energy, potential and kinetic, and describes conversion between types of energy (while conserving the total amount), units, and the special position of heat. Be sure to follow the link to the lesson supplements.

Potential Energy

This site has an interactive simulation on the potential and kinetic energy of dropped balls. It includes explanatory material as well.

 

5.2  Energy in Mechanical and Fluid Systems II

Bernoulli's Principle: Pressure Versus Velocity

Five simple experiments that illustrate Bernoulli's principle

Bernoulli Biography

A biography of Daniel Bernoulli

Bernoulli's Equation

This page from a site discussing the aerodynamics of bicycles covers Bernoulli's equation and examples.

Bernoulli Versus Newton

NASA site discusses Bernoulli's equation and how it explains why planes fly. Clicking on the term Bernoulli's equation within the page will take you to further explanation.

Bernoulli's Principle

Another site describing the relationship between Bernoulli's equation and flight

Determining a Spring Constant

This site is a lab activity for determining the spring constant of a spring and using graphing skills to determine the mass of an unknown object.


5.3  Energy in Electrical Systems

How Stuff Works: Capacitors

A introduction to capacitors, including a nice example to appreciate the units of measure for capacitance: the farad.

Faraday: Chemist, Physicist, Natural Philosopher

An interview-style biography of Michael Faraday

Michael Faraday (1791-1867)

This biography of Michael Faraday comes from the The Royal Institution of Great Britain. It includes photographs of some of the exhibits as well as links to some of Faraday's writings.

Joseph Henry

This is a biography of Joseph Henry.

Joseph Henry Papers Project

This is the Joseph Henry Papers Project of the Smithsonian Institutional History Division. It includes selected papers of Joseph Henry and other links describing his wide-ranging contributions to science.

Faraday

Vignettes on Faraday, Henry, and Lenz

Lenz's Law

This site includes a java applet demonstrating Lenz's law.

5.4  Energy in Thermal Systems

The Second Law

This applet and its explanation illustrate the 2nd law of thermodynamics in a bouncing ball.

Heat Engine

Forward and reverse heat engines and the first and second laws of thermodynamics

The Carnot Cycle and the Efficiency of Engines

Java demonstration of Carnot engine and Carnot cycle

Sadi Nicolas Léonard Carnot

A biography of Sadi Carnot

Kelvin Temperature Scale

This site includes a definition of the Kelvin temperature scale with links to a biography of William Thomson Kelvin.

How Refrigerators Work

How does a refrigerator work? Check it out at How Stuff Works.

A Simple Finite Entropy Example

Entropy applet example using pixels.

Entropy analogies

Entropy and poker…entropy and a box of air explanations.