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  2. Foot-pound (energy) - Wikipedia

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

    The foot-pound force (symbol: ft⋅lbf, [1] ftlb f, [2] or ftlb [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.

  3. TNT equivalent - Wikipedia

    en.wikipedia.org/wiki/TNT_equivalent

    A kiloton of TNT can be visualized as a cube of TNT 8.46 metres (27.8 ft) on a side. The "megaton (of TNT equivalent)" is a unit of energy equal to 4.184 petajoules (4.184 × 10 15 J). [3] The kiloton and megaton of TNT equivalent have traditionally been used to describe the energy output, and hence the destructive power, of a nuclear weapon.

  4. List of conversion factors - Wikipedia

    en.wikipedia.org/wiki/List_of_conversion_factors

    ≡ 1 × 10 −15 m: ... ≡ lb/ft 3: ≈ 16.018 463 37 kg/m 3: pound (avoirdupois) per cubic inch ... The power which in one second of time gives rise to one joule ...

  5. Units of energy - Wikipedia

    en.wikipedia.org/wiki/Units_of_energy

    Natural gas is often sold in units of energy content or by volume. Common units for selling by energy content are joules or therms. One therm is equal to about 1,055 megajoules. Common units for selling by volume are cubic metre or cubic feet. Natural gas in the US is sold in therms or 100 cubic feet (100 ft 3). In Australia, natural gas is ...

  6. Orders of magnitude (energy) - Wikipedia

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

    List of orders of magnitude for energy; Factor (joules) SI prefix Value Item 10 −34: 6.626 × 10 −34 J: Energy of a photon with a frequency of 1 hertz. [1]8 × 10 −34 J: Average kinetic energy of translational motion of a molecule at the lowest temperature reached (38 picokelvin [2] as of 2021)

  7. Joule - Wikipedia

    en.wikipedia.org/wiki/Joule

    The joule (/ dʒ uː l / JOOL, or / dʒ aʊ l / JOWL; symbol: J) is the unit of energy in the International System of Units (SI). [1] In terms of SI base units , one joule corresponds to one kilogram - square metre per square second (1 J = 1 kg⋅m 2 ⋅s −2 ).

  8. British thermal unit - Wikipedia

    en.wikipedia.org/wiki/British_thermal_unit

    778.2 ft⋅lbf (foot-pounds-force) 5.40395 (lbf/in 2 )⋅ft 3 A Btu can be approximated as the heat produced by burning a single wooden kitchen match or as the amount of energy it takes to lift a one-pound (0.45 kg) weight 778 feet (237 m).

  9. Free recoil - Wikipedia

    en.wikipedia.org/wiki/Free_recoil

    Free recoil / Frecoil is a vernacular term or jargon for recoil energy of a firearm not supported from behind. Free recoil denotes the translational kinetic energy (E t) imparted to the shooter of a small arm when discharged and is expressed in joules (J), or foot-pound force (ft·lb f) for non-SI units of measure.