PIC
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Quick Reference

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Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Chapter 10

Chapter 6: Power

Choose a system and follow the links.

Mechanical Fluid Electrical

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6.1  Power in Mechanical Systems

Power

This Physics Classroom site provides a tutorial on power and then allows you to test your understanding of the concepts of work, energy, and power.

How Horsepower Works

A site that describes horsepower and how it is measured and compares the horsepower in various high-performance car engines.

How Force, Power, Torque, and Energy Work

Visit this site for a refresher on mass, force, torque, work, and energy and to learn about power. Includes examples.

Physics Power Ratings

Each year the physics students at Berlin High School perform an experiment to determine the horsepower of their legs. Here is the data from past classes. How does your class compare?

James Watt

A short piece on James Watt's contribution to the develoment of the steam engine. Included is an animation of how the engine worked.

Work, Energy, Power

Part of the HyperPhysics site from Georgia State University. It defines work, energy, and power. Follow the "power concepts" links to learn more about power.

The Science of Hockey

This site on the science of hockey includes calculations in the section on checking for force and energy. It includes a calculation to determine how long a 60-watt bulb could be burned with the energy generated.

 

6.2  Power in Fluid Systems

The Nature of Water Power

A site on water and hydroelectric power that includes several activities for students to perform to help them learn more about issues related to hydroelectric power plants

Pneumatics Online Calculator

This site provides links to online calculators for cylinder bore, cylinder force, and valve flow in metric or imperial units.

Internet Glossary of Pumps

A good reference site on pumps and pump design. It depicts dozens of different pump designs with very nice graphics. Many are animated. Several of the pages give facts about flow rates and historical info about the various pump designs.

Pump-Zone.com

The online site for Pumps and Systems magazine. Provides many journal quality articles relating to pumps. Check current and archived articles (requires painless user registration).

What Is Fluid Power?

This National Fluid Power Association site provides an overview of fluid power for all. It teaches about fluid power in general, and it includes links for employment opportunities in fluid power.

Hydraulic Symbols Tutorial

A rather interesting pictoral listing and explanation of symbols used in hydraulic schematics. It includes an online quiz.


6.3  Power in Electrical Systems

DC Electric Power

A page from the Georgia State University HyperPhysics site that provides tools for determining DC electric power and discusses power dissipated in a resistor

Electrical Power: Sources and Transmission

Part of the ThinkQuest lesson, "Electricity Online." It is a survey of sources and transmission of electric power. It does not go into formulas or calculations.

Wind Power

This section of the Renewable Energy Policy Project is dedicated to wind power. Links will let you explore the theory behind and the history, applications, economics, and environmental impact of wind power. Links at the top of the page will take you to similar sites for biomass, hydro, geothermal, and solar power.

Other links: http://www.awea.org/faq/index.html
http://www.eren.doe.gov/RE/wind.html

The Energy Story

Explains the different sources of energy, how they are used to generate electricity, how electricity is transmitted to our homes, and how we can decrease our energy usage

How Power Distribution Grids Work

This is a nice site for learning about power distribution from the power plant to the outlet in your bedroom. Links from this page take you to other pages giving more in-depth information on how specific components of the power grid work.

Electric Power Distribution

A schematic that shows electric power distribution from power plant to your home. It provides links to some interesting facts about electricity production and distribution for several different utility companies.

High-Voltage Transmission Lines

This site explains the physics of electrical resistance and electrical power in high-voltage transmission lines. It also explains why alternating current is preferable to direct current for distributing electricity.

Your Electric Meter

Learn how to read your electric meter.

Vacuuming the Refrigerator with the Drapes Closed

Links to several lists of things you can do to reduce your use of electricity and save on the electric bill

Appliance Standards Awareness Project (ASAP)

Information on standards to improve the energy efficiency of major household appliances and the potential savings in terms of energy costs and environmental impact that can be achieved by producing more energy-efficient appliances