States of Matter: Solid, Liquid, and Gas
In this program matter is discussed as anything that has mass or takes up space. Three of the recognized five states of Matter are solid, liquid and gas. (The other two are plasma and Bose-Einstein concentrates) As different forces are applied to matter, like heat, matter can change from one form to another: solid to liquid, liquid to gas, or solid to gas. Show Me Science: States of Matter: Solid, Liquid, and Gas describes what happens to matter at boiling, melting, freezing, and dew points. The
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Conservation of Momentum

If The Mechanical Universe is a perpetual clock, what keeps it ticking away till the end of time? Taking a cue from Descartes, momentum -- the product of mass and velocity -- is always conserved. Newton's laws embody the concept of conservation and momentum. This law provides a powerful principle for analyzing collisions, even at the local pool hall.


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Momentum at the Oswego Speedway
This video takes you to a speedway in New York.  It explains the weight of the car and the impact the car creates during a wreck. The video shows you the wall around the track, made of foam, that increases the impact time during a wreck.  The narrator also mentions mass, velocity, impulse, and change in momentum. Run time 04:20.
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Eureka! Episode 2 - Mass
Building on the concept of inertia, Eureka! adds the factor of mass, tells how it's measured, and shows how it differs from size. Concept: Inertia increases with mass. Eureka was a series of short cartoons on physics that ran on public television in the 1980's.  The video explains the concept in simple and well illustrated way.  Good for students of any elementary school level.
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Weight vs. Mass
Eureka! explains the difference between weight and mass, and shows how only mass is the same on the moon and on the earth. Eureka was a series of short cartoons on physics that ran on public television in the 1980's.  The video explains the concept in simple and well illustrated way.  Good for students of any elementary school level.  Run time 04:46.
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Mass - Sixty Symbols
What is mass and where does it come from? Video explains mass, inertia mass of an object, and what causes mass.  There are many things about mass which we don’t know.  Mass has two definitions, one is gravity, the more massive an object is the more massive the gravity.  The second is how much something doesn’t like to be pushed around.  So, the higher the mass the more you have to push it.  The video also gives examples to these two defin
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Center of Mass
Introduction to the center of mass. This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses different colors for clarification.
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Introduction to Torque
An introduction to torque. Introduction to the center of mass. This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses different colors for clarification. Run time 09:24.
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Introduction to Harmonic Motion
Intuition behind the motion of a mass on a spring (some calculus near the end). This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses different colors for clarification. Run time 10:30.
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Harmonic Motion, Part 2
Instructor tests whether Acos (wt) can describe the motion of the mass on a spring by substituting into the differential equation F=-kx. This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses different colors for clarification. Run time 09:45.
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Cold War: Afghanistan - part 1/5
1975 - 1988 Afghanistan is a war that cost the lives of almost 15,000 Soviet conscripts and an estimated one million Afghans. The United States supplied billions of dollars of weapons to unlikely allies - Islamic fundamentalists. The result is a Vietnam-style conflict which takes its toll on the Soviets and hastens the end of the Cold War.
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Cold War: Afghanistan - part 2/5
1975 - 1988 Afghanistan is a war that cost the lives of almost 15,000 Soviet conscripts and an estimated one million Afghans. The United States supplied billions of dollars of weapons to unlikely allies - Islamic fundamentalists. The result is a Vietnam-style conflict which takes its toll on the Soviets and hastens the end of the Cold War.
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Cold War: Afghanistan - part 3/5
1975 - 1988 Afghanistan is a war that cost the lives of almost 15,000 Soviet conscripts and an estimated one million Afghans. The United States supplied billions of dollars of weapons to unlikely allies - Islamic fundamentalists. The result is a Vietnam-style conflict which takes its toll on the Soviets and hastens the end of the Cold War.
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Cold War: Afghanistan - part 4/5
1975 - 1988 Afghanistan is a war that cost the lives of almost 15,000 Soviet conscripts and an estimated one million Afghans. The United States supplied billions of dollars of weapons to unlikely allies - Islamic fundamentalists. The result is a Vietnam-style conflict which takes its toll on the Soviets and hastens the end of the Cold War.
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Cold War: Afghanistan - part 5/5
1975 - 1988 Afghanistan is a war that cost the lives of almost 15,000 Soviet conscripts and an estimated one million Afghans. The United States supplied billions of dollars of weapons to unlikely allies - Islamic fundamentalists. The result is a Vietnam-style conflict which takes its toll on the Soviets and hastens the end of the Cold War.
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Mass Composition Problem (Chemistry Involving Hydrogen)
Instructor discusses an exercise converting a mass composition to an empirical formula in this video. Instructor uses a black screen to write on with his cursor and uses different colors to highlight points. According to instructor, this is high school chemistry.
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Earth's Mass Extinctions
Asteroid strikes get all the coverage, but "Medea Hypothesis" author Peter Ward argues that most of Earth's mass extinctions were caused by lowly bacteria. The culprit, a poison called hydrogen sulfide, may have an interesting application in medicine. Ward explores what is needed for life to form and be maintained on a planet.
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Atoms and Molecules
This video is accompanied by text: "...An atom is the fundamental unit of chemical matter. The nucleus is an atom's center of mass and center of positive charge. The nucleus contains positively charged protons, shown in white, and uncharged neutrons, shown in blue. A cloud of negatively charged particles called electrons surrounds the nucleus.
All atoms of a given element have the same number of protons, but the number of neutrons can vary. Isotopes are atoms of the same element with diff

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Weather Fronts
This video discusses what a front is. They start with an air mass and the transitional zone is called a front. It is hard to tell if it is a cold or warm front. If the warm air is advancing it is a warm front. This video show the symbols that are used by meterologists. It shows how one mass moves over another mass. This is a good, basic video.
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The Mole

Using Avogadro's law, the mass of a substance can be related to the number of particles contained in that mass. Chemists have learned how to count molecules by weighing macroscopic amounts. Chemists must measure precise amounts for reactions to occur in an accurate manner. Analytical data and masses from the atomic chart are used to determine the number of atoms in a
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