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The tonne of oil equivalent (toe) is a unit of energy defined as the amount of energy released by burning one tonne of crude oil. It is approximately 42 gigajoules or 11.630 megawatt-hours, although as different crude oils have different calorific values, the exact value is defined by convention; several slightly different definitions exist.
Energy; system unit code (alternative) symbol or abbrev. notes sample default conversion combinations SI: yottajoule: YJ YJ 1.0 YJ (2.8 × 10 17 kWh) zettajoule: ZJ ZJ 1.0 ZJ (2.8 × 10 14 kWh)
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Billion cubic meters of natural gas (non SI abbreviation: bcm) or cubic kilometer of natural gas is a measure of natural gas production and trade. Some definitions cite volume, others energy content. Dependant of implied standards, this measure may represent different value of energy content. According to the standard defined by the ...
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.
1.7×10 −21 J. 1 kJ/mol, converted to energy per molecule [9] 2.1×10 −21 J. Thermal energy in each degree of freedom of a molecule at 25 °C (kT /2) (0.01 eV) [10] 2.856×10 −21 J. By Landauer's principle, the minimum amount of energy required at 25 °C to change one bit of information. 3–7×10 −21 J.
The United Nations uses a combination of ISO 3166-1 alpha-2 and alpha-3 codes, along with codes that pre-date the creation of ISO 3166, for international vehicle registration codes, which are codes used to identify the issuing country of a vehicle registration plate; some of these codes are currently indeterminately reserved in ISO 3166-1.