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Physics

Electric Field (continued)

Since both loads generating the field have negative signs, each component of the resulting field vector is convergent, meaning it has a sense of approximation. The modulus, direction and direction of this vector are calculated by the parallelogram rule, as illustrated in the figure. In this example, the loads generating the resulting field have different signals, so one of the vectors converges relative to its generating load () and the other diverges ().
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Chemistry

Formulas - Chemical Kinetics

Where: Vm = average velocity (mol / L / s) concentration change (mol / L) time change (s, min) modulus Tip: Modulus is used because the result must be positive since there is no negative velocity. Being the chemical reaction: Being the chemical reaction: A way to calculate, in the exothermic and endothermic reaction graphs, the activation energy and the energy of the activated complex.
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Physics

Dictionary - F

Phase: Each aspect of the moon and some planets as they describe their orbit. State of oscillation at a given time. Homogeneous, physically distinct and mechanically separable portion of matter present in a heterogeneous system, which may be either a single compound or a mixture. The position of an alternating force in cycle, measured from the preceding zero value.
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Chemistry

Glycides

The word glycids comes from the Greek glycos, which means sweet. These are sugars, from the most common to the most complex, such as starch and cellulose. Glycerides are compounds that have a mixed organic function polyalcohol-aldehyde or polyalcoholone, among other compounds that, upon hydrolysis, result in polyalcoholdehyde or polyalcoholone.
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Chemistry

Why does popcorn corn burst?

Corn is a very hard food and small air bubbles are trapped inside it. When corn gets hot, the trapped air tries to expand, increasing its volume more than 20 times. The air molecules move fast and press harder and harder on the tough walls of the small bubbles until they break and the corn kernels explode in soft, light popcorn.
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Physics

Thermodynamics Applications

Thermodynamics is the part of physics responsible for applying heat and temperature studies in the context of industry and the transformation of thermal energy into usable energy. The applications of thermodynamics became evident during the Industrial Revolution, that by using large thermal machines a great boost in industrialization was possible throughout the world.
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