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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.
The thrust-to-weight ratio is calculated by dividing the thrust (in SI units – in newtons) by the weight (in newtons) of the engine or vehicle. The weight (N) is calculated by multiplying the mass in kilograms (kg) by the acceleration due to gravity (m/s 2). The thrust can also be measured in pound-force (lbf), provided the weight is measured ...
and for the reverse conversion: where: ppmv. = air pollutant concentration, in parts per million by volume. mg/m 3. = milligrams of pollutant per cubic meter of air. T {\displaystyle T} = atmospheric temperature in kelvins = 273.15 + °C. 0.08205.
The British thermal unit (Btu) is a measure of heat, which is a form of energy. It was originally defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. It is also part of the United States customary units. [1] The SI unit for energy is the joule (J); one Btu equals about 1,055 J (varying ...
1.12 short tons (exactly) The long ton, [ 1 ] also known as the imperial ton or displacement ton, [ 1 ][ 2 ] is a measurement unit equal to 2,240 pounds (1,016.0 kg). It is the name for the unit called the " ton " in the avoirdupois system of weights or Imperial system of measurements. It was standardised in the 13th century.
In soil mechanics, specific weight may refer to: Moist unit weight. The unit weight of a soil when void spaces of the soil contain both water and air. where. γ is the moist unit weight of the material. γw is the unit weight of water. w is the moisture content of the material. Gs is the specific gravity of the solid. e is the void ratio.
A kip is a US customary unit of force. It equals 1000 pounds-force, and is used primarily by structural engineers to indicate forces where the value represented in pound-force is inefficient. Although uncommon, it is occasionally also considered a unit of mass, equal to 1000 pounds (i.e. one half of a short ton).
25,000. 100,000. Most powerful US weapons ever: 25 megatonnes of TNT (100 PJ); the Mk-17 was also the largest by area square footage and mass cubic footage: about 20 short tons (18,000 kg). The Mk-41 or B41 had a mass of 4800 kg and yield of 25 Mt; this equates to being the highest yield-to-weight weapon ever produced.