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"Net force, also known as resultant force, is a vector quantity produced when two or more forces act upon one object. The concept of net force is the same as the mathematical concept of vector additio ...
Video Matemáticas
"The average velocity of an object over a given period of time is found by dividing the distance it has traveled by the time elapsed. Because velocity refers to the rate at which an object changes pos ...
Video Física
"Speed refers to the rate at which an object travels. Unlike velocity, speed is a scalar quantity so direction does not matter. Average speed is calculated by dividing distance by time (e.g. miles/hou ...
Video Física
"Atomic orbitals are regions of space in which electrons can be found. Each orbital can fit two electrons and different orbitals have different shapes. The s sub-level has one spherically shaped orbit ...
"Every element has a unique atomic number. The atomic number specifies how many protons an element has in its nucleus. In the periodic table of the elements, elements are arranged in order of ascendin ...
"Momentum is a vector quantity used to quantify an object's motion in which the direction of the vector is the same as the direction of the object and the magnitude is equal to the mass times the velo ...
Video Física
"The atomic nucleus was discovered by Earnest Rutherford in his Gold Foil Experiment in which he shot alpha particles at a thin piece of gold foil. Most of the particles went straight through the foil ...
Video Física
"Atomic model theories have developed over the years. In 450 B.C., Democritus introduced the name atomos, which means "uncuttable" in Greek. Democritus stated that when dividing matter down further an ...
Video Física
"An element’s atomic mass is the mass of one atom of that element, measured in atomic mass units (amu). An element’s atomic mass in amu is equal to its molar mass in g/mol." Fuente: BrightStormAtomic ...
"Mixtures are composed of pure substances and elements, but unlike compounds these substances retain their own chemical identities and properties. Mixtures can be homogeneous or heterogeneous. Homogen ...
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