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Transcript of Enerygy
work is energy to an object by applying a force over a displacement W=mgh
is called the “gravitational work”, or potential energy, and is the work done by a force on a body of mass m, against the force of gravity g, when the mass is raised though a distance of height h or, conversely, the work done by the force of gravity on the rock, when the mass is lowered through a distance of height h.
mv2/2 Ek = ½mv²
Kinetic energy is the energy an object possesses due to its motion. An object of mass m moving at velocity v has a kinetic energy equal to ½mv². Etot=Eg+Ek
The total mechanical energy is the sum of gravitational potential + kinetic Radiant Radiant energy is energy that is transfered by electromagnetic radiant. Such as light, gamma rays, x rays, and thermal radiation. This energy is called photons or electromagnetic waves. Electrical energy is available by the flow of electric change through a conductor Thermal Thermal energy is the energy of motion in the molecules of a substance