Friction - Dynamics - Physics 101

Did you know that friction is actually an electromagnetic force? That's right, friction arises from the interaction between atoms and molecules on the surfaces of two objects that are in contact. Certain atoms or molecules attract each other, increasing frictional forces, while others repel each other, reducing frictional forces.
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Physics for High School by OpenStax
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Physics For Fun
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Evolution of Physics - Albert Einstein
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Six Not-So-Easy Pieces - Richard P. Feynman
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A Brief History of Time - Stephen Hawking
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Physics of the Impossible - Kaku Michio
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For the Love of Physics - Walter Lewin
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The Elegant Universe - Brian Greene
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The Fabric of the Cosmos - Brian Greene
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