Recent content by todopoderoso17

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    What are the coefficients of friction for different materials?

    Someone know the coefficients of friction of wood in wood, wood in metal, metal in wood and metal in metal, calculated with the tangent of the resulting angle of the inclined plane method?
  2. T

    Earth Radius: Who Measured & What Method Used?

    Someone knows who measured the Earth Radius and the methods that used?
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