Average Velocity and Instantaneous Velocity
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How to Enrich Uranium
Uranium enrichment increases the percentage of uranium-235 (U-235) in uranium. Natural uranium has 0.7% U-235, while nuclear reactor fuel needs 3-5%. More ...
JVectors - Unit Vectors and Adding Vectors by Componets
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Average Acceleration and Instantaneous Acceleration
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Hadrons and Leptons
Particles can be grouped according to what forces they feel between them. Hadrons are particles that feel the strong nuclear force, whereas leptons are particles that do not. More ...
Newton's Third Law
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Quarks
Quarks and gluons are the building blocks of protons and neutrons, which in turn are the building blocks of atomic nuclei. They are the elementary particles in the present standard model. More ...
The Periodic Table of the Elements
The periodic table arranges all the known elements into rows (called periods) and columns (called groups). All elements in the same period have the same number of electron shells. Elements in the same group have the same number of valence electrons. More ...
Multiplying Vectors
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Projectile Motion
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