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  2. Ton - Wikipedia

    en.wikipedia.org/wiki/Ton

    A ton of TNT or tonne of TNT is a unit of energy equal to 10 9 (thermochemical) calories, also known as a gigacalorie (Gcal), equal to 4.184 gigajoules (GJ). A kiloton of TNT or kilotonne of TNT is a unit of energy equal to 10 12 calories, also known as a teracalorie (Tcal), equal to 4.184 terajoules (TJ).

  3. Tonne - Wikipedia

    en.wikipedia.org/wiki/Tonne

    The tonne (/ t ʌ n / ⓘ or / t ɒ n /; symbol: t) is a unit of mass equal to 1,000 kilograms.It is a non-SI unit accepted for use with SI.It is also referred to as a metric ton in the United States to distinguish it from the non-metric units of the short ton (United States customary units) and the long ton (British imperial units).

  4. Japanese units of measurement - Wikipedia

    en.wikipedia.org/wiki/Japanese_units_of_measurement

    Sometimes hiro is used equal to 5 shaku [19] (⁠ 50 / 33 ⁠ m, ~1.5152 metres). The traditional units are still used for construction materials in Japan. For example, plywood is usually manufactured in 182 cm × 91 cm (about 72 in × 36 in ) sheets known in the trade as saburokuhan ( 3 × 6版 ) , or 3 × 6 shaku .

  5. Ton of refrigeration - Wikipedia

    en.wikipedia.org/wiki/Ton_of_refrigeration

    It was originally defined as the rate of heat transfer that results in the freezing or melting of 1 short ton (2,000 lb; 907 kg) of pure ice at 0 °C (32 °F) in 24 hours. [1] [2] The modern definition is exactly 12,000 Btu IT /h (3.516853 kW). Air-conditioning and refrigeration equipment capacity in the U.S. is often specified in "tons" (of ...

  6. List of trigonometric identities - Wikipedia

    en.wikipedia.org/wiki/List_of_trigonometric...

    Ptolemy's theorem states that the sum of the products of the lengths of opposite sides is equal to the product of the lengths of the diagonals. When those side-lengths are expressed in terms of the sin and cos values shown in the figure above, this yields the angle sum trigonometric identity for sine: sin( α + β ) = sin α cos β + cos α sin ...

  7. Yojana - Wikipedia

    en.wikipedia.org/wiki/Yojana

    Estimated between 1.73 cm (0.68 inches) to 1.91 cm (0.75 inches). [12] [note 4] 6 finger 1 pada (the breadth of a foot) other sources define this unit differently: see Pada (foot) 2 pada 1 vitasti (span or distance between the tip of the forefinger and wrist) [13] ~ 22.86 cm (9 inches) 2 vitasti 1 hasta ~ 45.7 cm (18 inches) 2 hasta 1 náriká

  8. 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.

  9. Kilogram - Wikipedia

    en.wikipedia.org/wiki/Kilogram

    The kilogram (also spelled kilogramme [1]) is the base unit of mass in the International System of Units (SI), having the unit symbol kg. [1] The word "kilogram" is formed from the combination of the metric prefix kilo- (meaning one thousand) and gram ; [ 2 ] it is colloquially shortened to " kilo " (plural "kilos").