Description, diagrams and equations for gravitational energy. Includes example and energy of an orbiting satellite.
Spark Notes
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Hundreds of free games illustrating basic principles of physics.
PhysicsGames.net
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This website includes movies in both MPEG and QuickTime formats about the experiments in Gravity. It also includes a "basement experiment" for testing the universality of gravity and an applet demonstrating general relativity.
fourmilab
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video with NASA film and voiced explanation of "weightlessness"
YouTube
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A list of equations and constants for AP Physics B and C exams, organized by subject.
PhysicsLAB
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Need to study for Physics? Here are some questions to help you out!!!
StudyStack
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Includes equation and an example of calculating the period of the moon using gravitation and circular motion.
NASA
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Equations, description and diagrams of gravitation. Includes satellite motion.
Spark Notes
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Covers basics of universal gravitation and application to motion of satellites. Includes example problems.
PhysicsLAB
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