Measure of the force of gravity
Briefly explain the measure of the force of gravity on the object?
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Force is the vector product of acceleration and mass: F = ma. The weight is a particular case of that formula, where you replace the acceleration of gravity, g, for a. We can thus write: W = mg.1
Describe the fundamental principles of the regulation? Briefly describe the principles?
Refraction law: For a wave-front travelling via a boundary among two media, the first with a refractive index of n1, and the other with one of n2, the angle of incidence theta is associated to the angle of refraction phi by:
Write down any two elementary particles that have nearly infinite life time?
Illustrate the difference between the cathode ray and beta ray?
Fermat's principle: principle of least time (P. de Fermat): The principle, put onward by P. de Fermat that explains the path taken by a ray of light among any two points in a system is for all time the path which takes the least time.
Avogadro's hypothesis (Count A. Avogadro; 1811): Equivalent volumes of all gases at similar temperature and pressure contain equivalent numbers of molecules. This is, in fact, true only for the ideal gases. <
Parsec: The unit of distance stated as the distance pointed by an Earth-orbit parallax of 1 arcsec. It equals around 206 264 au, or about 3.086 x 1016 m
Describe the universal law of universal gravitation? Briefly describe it.
Briefly describe the applications of the nmr spectroscopy?
Speed of light (in vacuo): c: The speed at which the electromagnetic radiation spreads in a vacuum; it is stated as 299 792 458 m/s.
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