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2. Power (physics) - Wikipedia

   en.wikipedia.org/wiki/Power_(physics)

   Power is the rate with respect to time at which work is done; it is the time derivative of work: =, where P is power, W is work, and t is time. We will now show that the mechanical power generated by a force F on a body moving at the velocity v can be expressed as the product: P = d W d t = F ⋅ v {\displaystyle P={\frac {dW}{dt}}=\mathbf {F ...

3. Laws of thermodynamics - Wikipedia

   en.wikipedia.org/wiki/Laws_of_thermodynamics

   Work added to the system increases the potential energy of the system. When matter is transferred into a system, the internal energy and potential energy associated with it are transferred into the new combined system. () = where u denotes the internal energy per unit mass of the transferred matter, as measured while in the surroundings; and ...

4. Work (physics) - Wikipedia

   en.wikipedia.org/wiki/Work_(physics)

   This also means the constraint forces do not add to the instantaneous power.) The time integral of this scalar equation yields work from the instantaneous power, and kinetic energy from the scalar product of acceleration with velocity. The fact that the work–energy principle eliminates the constraint forces underlies Lagrangian mechanics. [28]

5. Work (thermodynamics) - Wikipedia

   en.wikipedia.org/wiki/Work_(thermodynamics)

   Thermodynamic work is one of the principal kinds of process by which a thermodynamic system can interact with and transfer energy to its surroundings. This results in externally measurable macroscopic forces on the system's surroundings, which can cause mechanical work, to lift a weight, for example, [1] or cause changes in electromagnetic, [2] [3] [4] or gravitational [5] variables.

6. Work function - Wikipedia

   en.wikipedia.org/wiki/Work_function

   The photoelectric work function is the minimum photon energy required to liberate an electron from a substance, in the photoelectric effect. If the photon's energy is greater than the substance's work function, photoelectric emission occurs and the electron is liberated from the surface. Similar to the thermionic case described above, the ...

7. Units of energy - Wikipedia

   en.wikipedia.org/wiki/Units_of_energy

   A unit of electrical energy, particularly for utility bills, is the kilowatt-hour (kWh); [3] one kilowatt-hour is equivalent to 3.6 megajoules. Electricity usage is often given in units of kilowatt-hours per year or other periods. [4] This is a measurement of average power consumption, meaning the average rate at which energy is transferred ...

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Potential energy - Wikipedia

   en.wikipedia.org/wiki/Potential_energy

   There are various types of potential energy, each associated with a particular type of force. For example, the work of an elastic force is called elastic potential energy; work of the gravitational force is called gravitational potential energy; work of the Coulomb force is called electric potential energy; work of the strong nuclear force or weak nuclear force acting on the baryon charge is ...