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  1. Dictionary
    internal energy

    noun

    • 1. the energy in a system arising from the relative positions and interactions of its parts.

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  2. www.britannica.com › science › internal-energyInternal energy | Definition & Facts | Britannica

    Jun 11, 2024 · Internal energy, in thermodynamics, the property or state function that defines the energy of a substance in the absence of effects due to capillarity and external electric, magnetic, and other fields. Like any other state function, the value of the energy depends upon the state of the substance.

  3. www.britannica.com › Heat-capacity-and-internal-energyThermodynamics - Heat Capacity, Internal Energy | Britannica

    Jun 18, 2024 · Thermodynamics - Heat Capacity, Internal Energy: The goal in defining heat capacity is to relate changes in the internal energy to measured changes in the variables that characterize the states of the system.

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  5. www.britannica.com › science › thermodynamicsThermodynamics | Laws, Definition, & Equations | Britannica

    Jun 18, 2024 · The change in a system’s internal energy is equal to the difference between heat added to the system from its surroundings and work done by the system on its surroundings. In other words, energy can not be created or destroyed but merely converted from one form to another.

  6. www.physicsforums.com › tags › internal-energyWhat is Internal energy: Definition and 381 Discussions

    Jun 8, 2024 · The internal energy of a thermodynamic system is the energy contained within it. It is the energy necessary to create or prepare the system in any given internal state.

  7. www.vedantu.com › question-answer › what-is-internal-energyWhat is Internal Energy? - Vedantu

    Jun 28, 2024 · Internal energy, which comes from the molecular state of motion of matter, is an energy form inherent in every system. Internal energy is denoted by the letter U, and the joule is the unit of measurement (J).

  8. brainmass.com › physics › internal-energyInternal Energy - BrainMass

    2 days ago · Internal energy is the total energy contained by a thermodynamic system. It is the energy required to create the system but remove the energy to displace the system’s surroundings, any energy connected with a move as a whole.

  9. link.springer.com › chapter › 10Heat Machines and Cycles—Internal Energy | SpringerLink

    Jun 26, 2024 · The quantity U is called the internal energy and is defined on the domain \( \mathcal {D} \) by the above procedure. Why internal energy? First, let us note that it is a function, in our basic model a function \( \hat{U}(V,T) \). This means that for given values of volume and temperature, its value is uniquely determined.