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Physics

Albert Einstein

Albert Einstein (1879 - 1955), a German physicist of Jewish origin, was one of the greatest scientists of all time. He is especially known for his theory of relativity, which he first expounded in 1905 when he was only 26 years old. His contributions to science were many. Relativity: Einstein's theory of relativity revolutionized scientific thinking with its new conceptions of time, space, mass, motion, and gravitation.
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Physics

Electric Field (continued)

The electric field can have at least four different orientations of its vector due to the signals of interaction between the charges, when the field is generated by only one charge, these are: When the test charge has negative sign (q0), both vectors have the same direction and direction. When the generating field charge has a positive sign (Q> 0), the electric field vector has a sense of charge shifting and when it has negative sign (Q when a single particle is responsible for generating an electric field, it is generated in a space around it, although it is not present at the point where the particle is found.
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Chemistry

Amines

Amines are nitrogenous organic compounds theoretically derived from ammonia (NH 3) by replacing one, two or three hydrogens with alkyl or aryl groups. Examples: There are some types of amines according to the number of hydrogen substituting radicals. - primary amines: a hydrogen substituted by an organic radical.
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Physics

Resistors

They are parts used in electrical circuits whose main function is to convert electrical energy into thermal energy, that is, they are used as heaters or as heat sinks. Some examples of resistors used in our daily lives are: the filament of an incandescent lamp, the heater of an electric shower, the filaments that are heated in a greenhouse, among others.
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Chemistry

Hydrocarbons (continued)

Cyclanes are cyclic hydrocarbons that contain only a single bond. Therefore, it is a saturated hydrocarbon. Its general formula is C n H 2n It can be represented by a geometric figure, indicating the cycle. Cyclanes are obtained through petroleum. It is used as a solvent and remover of paints and varnishes.
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