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  2. Joule - Wikipedia

    en.wikipedia.org/wiki/Joule

    The kinetic energy of a 2 kg mass travelling at 1 m/s, or a 1 kg mass travelling at 1.41 m/s. The energy required to lift an apple up 1 m, assuming the apple has a mass of 101.97 g. The heat required to raise the temperature of 0.239 g of water from 0 °C to 1 °C.

  3. Specific heat capacity - Wikipedia

    en.wikipedia.org/wiki/Specific_heat_capacity

    2 (736 J⋅K −1 ⋅kg −1) is greater than that of an hypothetical monatomic gas with the same molecular mass 28 (445 J⋅K −1 ⋅kg −1), by a factor of ⁠ 5 / 3 ⁠. This value for the specific heat capacity of nitrogen is practically constant from below −150 °C to about 300 °C.

  4. Specific energy - Wikipedia

    en.wikipedia.org/wiki/Specific_energy

    Kinetic energy per unit mass: ⁠ 1 / 2 ⁠ v 2, where v is the speed (giving J/kg when v is in m/s). See also kinetic energy per unit mass of projectiles . Potential energy with respect to gravity, close to Earth, per unit mass: gh , where g is the acceleration due to gravity ( standardized as ≈9.8 m/s 2 ) and h is the height above the ...

  5. International System of Units - Wikipedia

    en.wikipedia.org/wiki/International_System_of_Units

    6.626 070 15 × 10 −34 J⋅s: e: ... The international yard and pound are defined in terms of the SI. ... mass, and time using dimensional analysis was beset with ...

  6. Work (physics) - Wikipedia

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

    As the unit name suggests, it is the product of pounds for the unit of force and feet for the unit of displacement. One joule is approximately equal to 0.7376 ft-lbs. [13] [14] Non-SI units of work include the newton-metre, erg, the foot-pound, the foot-poundal, the kilowatt hour, the litre-atmosphere, and the horsepower-hour.

  7. Units of energy - Wikipedia

    en.wikipedia.org/wiki/Units_of_energy

    The British imperial units and U.S. customary units for both energy and work include the foot-pound force (1.3558 J), the British thermal unit (BTU) which has various values in the region of 1055 J, the horsepower-hour (2.6845 MJ), and the gasoline gallon equivalent (about 120 MJ). Log-base-10 of the ratios between various measures of energy

  8. Heat capacity - Wikipedia

    en.wikipedia.org/wiki/Heat_capacity

    In those contexts, the unit of heat capacity is 1 BTU/°R ≈ 1900 J/K. [5] The BTU was in fact defined so that the average heat capacity of one pound of water would be 1 BTU/°F. In this regard, with respect to mass, note conversion of 1 Btu/lb⋅°R ≈ 4,187 J/kg⋅K [ 6 ] and the calorie (below).

  9. List of physical quantities - Wikipedia

    en.wikipedia.org/wiki/List_of_physical_quantities

    Mass of a substance as a fraction of the total mass kg/kg 1: intensive (Mass) Density (or volume density) ρ: Mass per unit volume kg/m 3: L −3 M: intensive Mean lifetime: τ: Average time for a particle of a substance to decay s T: intensive Molar concentration: C: Amount of substance per unit volume mol⋅m −3: L −3 N: intensive Molar ...