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University of Virginia: How Things Work
A site maintained by A. Bloomfield, the author of "How Things Work: The Physics of Everyday Life." You can read old questions or ask Bloomfield your own. Great explanations of everyday physics.
OpenStax
Open Stax: Potential Energy and Conservative Forces
In the following interactive students will define conservative force, potential energy, and mechanical energy. They will explain the potential energy of a spring in terms of its compression when Hooke's Law applies. Students will also...
Physics Classroom
The Physics Classroom: Work, Energy, and Power: Calculating Work Done by Forces
Through interactive practice problems and examples, students calculate the amount of work done by forces.
Georgia State University
Georgia State University: Hyper Physics: Conservation of Energy
This site is from the Physics Department at Georgia State University. The conservation of energy as a fundamental conservation law is presented and compared to other conservation laws (momentum and angular momentum). Links to further...
Georgia State University
Georgia State University: Hyper Physics: Energy of Falling Object
This site is from the Physics Department at Georgia State University. The reliance upon the law of conservation of energy as an approach to problem-solving is presented and encouraged. It is modeled through a problem involving a...
Physics Classroom
The Physics Classroom: Energy Relationships for Satellites
The orbits of satellites are described and an energy analysis is performed. Kinetic, potential and total mechanical energy are explained and applied to the motion of satellites.
BBC
Bbc: Bitesize History: The Chartists: The Roots of Chartism
Discusses how Chartism took hold in Britain and the people who championed the movement.
Texas State Library and Archives Commission
Texas State Library and Archives Commission: The 1880s: Convict Lease
African American convicts faced physical abuse, were forced to work long hours, and experienced poor living conditions as part of the "Convict Lease" program set up to pay for the prison system. Read about why this program was started...