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  2. Orders of magnitude (energy) - Wikipedia

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

    Kinetic energy of a regulation (standard) baseball (5.1 oz / 145 g) [80] thrown at 93 mph / 150 km/h (MLB average pitch speed). [81] 1.5×10 2 - 3.6×10 2 J: Energy delivered by a biphasic external electric shock (defibrillation), usually during adult cardiopulmonary resuscitation for cardiac arrest. 3×10 2 J: Energy of a lethal dose of X-rays ...

  3. Energy efficiency in transport - Wikipedia

    en.wikipedia.org/wiki/Energy_efficiency_in_transport

    The sources for these figures are in the correspondent section for each vehicle, in the following article. The conversions amongst different types of units, are well known in the art. For the conversion amongst units of energy in the following table, 1 litre of petrol amounts to 34.2 MJ, 1 kWh amounts to 3.6 MJ and 1 kilocalorie amounts to 4184 J.

  4. Tael - Wikipedia

    en.wikipedia.org/wiki/Tael

    The Taiwan tael is 37.5 g and is still used in some contexts. The Taiwan tael is derived from the tael or ryō ( 両 ) of the Japanese system (equal to 10 momme ) which was 37.5 g. Although the catty (equal to 16 taels) is still frequently used in Taiwan, the tael is only used for precious metals and herbal medicines.

  5. Model rocket motor classification - Wikipedia

    en.wikipedia.org/wiki/Model_rocket_motor...

    The designation for a specific motor looks like C6-3.In this example, the letter (C) represents the total impulse range of the motor, the number (6) before the dash represents the average thrust in newtons, and the number (3) after the dash represents the delay in seconds from propelling charge burnout to the firing of the ejection charge (a gas generator composition, usually black powder ...

  6. List of BMP-1 variants - Wikipedia

    en.wikipedia.org/wiki/List_of_BMP-1_variants

    BMP (Ob'yekt 764) – The original main prototype of the BMP-1 was developed by the design bureau of the Chelyabinsk Tractor Works (ChTZ) and built in 1965. In comparison with Ob'yekt 765Sp1, Ob'yekt 764 was 4 mm higher, had a maximum swimming speed of 10 km/h, a lower maximum range (550 km on road) and a reduced number of firing ports for its passenger's armament (six).

  7. Thin-film solar cell - Wikipedia

    en.wikipedia.org/wiki/Thin-film_solar_cell

    The connection wires run under the ridge cap at the top of the roof. Efficiency ranges from 10-18% but only costs about $2.00-$3.00 per watt of installed capacity, compared to Monocrystalline which is 17-22% efficient and costs $3.00-$3.50 per watt of installed capacity. Thin film solar is light weight at 7-10 ounces per square foot.

  8. History of the euro - Wikipedia

    en.wikipedia.org/wiki/History_of_the_euro

    Euro Zone inflation. The euro came into existence on 1 January 1999, although it had been a goal of the European Union (EU) and its predecessors since the 1960s. After tough negotiations, the Maastricht Treaty entered into force in 1993 with the goal of creating an economic and monetary union (EMU) by 1999 for all EU states except the UK and Denmark (even though Denmark has a fixed exchange ...

  9. Sheet metal - Wikipedia

    en.wikipedia.org/wiki/Sheet_metal

    The older United States Standard Gauge is based upon 40 lb per square foot per inch thick. Gauge is defined differently for ferrous (iron-based) and non-ferrous metals (e.g. aluminium and brass). The gauge thicknesses shown in column 2 (U.S. standard sheet and plate iron and steel decimal inch (mm)) seem somewhat arbitrary.