what is the equation to find energy?
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The formula that links energy and power is: Energy = Power x Time. The unit of energy is the joule, the unit of power is the watt, and the unit of time is the second.
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['Potential energy – energy at rest. Potential energy is stored energy. Example: a roller coaster at the top of a steep slope. ... ', 'Kinetic energy – energy in motion. Kinetic energy is the motion of waves, atoms, matter, and objects. Example: the roller coaster moving downward.']
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An object's ability to do work is measured by its mechanical energy, or the sum the object's kinetic energy and potential energy. Mechanical energy is due to the position or movement of an object. The formula for mechanical energy is mechanical energy = kinetic energy + potential energy.
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Originally Answered: What is the dimensional formula of a potential energy gradient? Potential energy (P.E.) = Mass(m) * Gravitational acceleration (g) * Altitude (h). Using this value in the above we get, Dimensional Formula of Potential energy= .
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E = mc2. It's the world's most famous equation, but what does it really mean? "Energy equals mass times the speed of light squared." On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.
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Fraction of energy lost = (Ei - Ef)/Ei = 1 - m1/(m1 + m2) = m2/(m1 + m2).
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Potential energy is energy an object has because of its position relative to some other object. ... For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.
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The equation expressing conservation of energy is: KEi+PEi=KEf+PEf. If you know the potential energy for only some of the forces, then the conservation of energy law in its most general form must be used: KEi+PEi+Wnc+OEi=KEf+PEf+OEf, where OE stands for all other energies.
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Work done = Energy transferred. W = E. Power = Energy ÷ Time. P = E ÷ t.
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Energy of a Photon The amount of energy in those photons is calculated by this equation, E = hf, where E is the energy of the photon in Joules; h is Planck's constant, which is always 6.63 * 10^-34 Joule seconds; and f is the frequency of the light in hertz.
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Power Formula 2 – Mechanical power equation: Power P = E ⁄ t where power P is in watts, Power P = work / time (W ⁄ t). Energy E is in joules, and time t is in seconds.
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The energy of light varies inversely with the length of the photon waves; that is, the shorter the wavelength, the greater the energy content. The energy (e) of a photon is given by the equation e = hc/λ, where c is the velocity of light, h is Planck's constant, and λ is the light wavelength.
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What is the formula for calculating kinetic energy? KE = mv2.
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The amount of grams of each energy source (fat, carbohydrate, and protein) and the amount of energy per gram of each energy source is given on the label. Multiply the grams by the Energy per gram to obtain the Energy.
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The formula for potential energy depends on the force acting on the two objects. For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.
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Science has demonstrated that mass can be converted into energy and energy into mass. The equation E = mc^2, where E = energy, m = mass, and c = the speed of light, is used to express the relative nature of mass and energy.
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Based on Einstein's equation E = mc^2, the amount of energy added is relative to the mass gained by the proton multiplied by the speed of light squared. In other words, a lot of energy is converted into a relatively small amount of mass.