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  2. Joule - Wikipedia

    en.wikipedia.org/wiki/Joule

    The joule (pronounced / ˈdʒuːl /, JOOL or / ˈdʒaʊl / JOWL; symbol: J) is the unit of energy in the International System of Units (SI). [ 1] It is equal to the amount of work done when a force of one newton displaces a mass through a distance of one metre in the direction of that force. It is also the energy dissipated as heat when an ...

  3. Units of energy - Wikipedia

    en.wikipedia.org/wiki/Units_of_energy

    Energy is defined via work, so the SI unit of energy is the same as the unit of work – the joule (J), named in honour of James Prescott Joule [1] and his experiments on the mechanical equivalent of heat. In slightly more fundamental terms, 1 joule is equal to 1 newton metre and, in terms of SI base units

  4. TNT equivalent - Wikipedia

    en.wikipedia.org/wiki/TNT_equivalent

    TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion. The ton of TNT is a unit of energy defined by convention to be 4.184 gigajoules ( 1 gigacalorie ), [ 1] which is the approximate energy released in the detonation of a metric ton (1,000 kilograms) of TNT.

  5. Work (thermodynamics) - Wikipedia

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

    PV work is often measured in units of litre-atmospheres where 1 L·atm = 101.325 J. However, the litre-atmosphere is not a recognized unit in the SI system of units, which measures P in pascals (Pa), V in m 3, and PV in joules (J), where 1 J = 1 Pa·m 3. PV work is an important topic in chemical thermodynamics.

  6. Foot-pound (energy) - Wikipedia

    en.wikipedia.org/wiki/Foot-pound_(energy)

    The foot-pound force (symbol: ft⋅lbf, [ 1] ft⋅lbf, [ 2] or ft⋅lb [ 3]) is a unit of work or energy in the engineering and gravitational systems in United States customary and imperial units of measure. It is the energy transferred upon applying a force of one pound-force (lbf) through a linear displacement of one foot.

  7. Kinetic energy - Wikipedia

    en.wikipedia.org/wiki/Kinetic_energy

    The same amount of work is done by the object when decelerating from its current speed to a state of rest. [ 2 ] The SI unit of kinetic energy is the joule , while the English unit of kinetic energy is the foot-pound .

  8. kT (energy) - Wikipedia

    en.wikipedia.org/wiki/KT_(energy)

    kT (also written as kBT) is the product of the Boltzmann constant, k (or kB ), and the temperature, T. This product is used in physics as a scale factor for energy values in molecular -scale systems (sometimes it is used as a unit of energy), as the rates and frequencies of many processes and phenomena depend not on their energy alone, but on ...

  9. Gas constant - Wikipedia

    en.wikipedia.org/wiki/Gas_constant

    It is a physical constant that is featured in many fundamental equations in the physical sciences, such as the ideal gas law, the Arrhenius equation, and the Nernst equation . The gas constant is the constant of proportionality that relates the energy scale in physics to the temperature scale and the scale used for amount of substance.