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  2. Percolation threshold - Wikipedia

    en.wikipedia.org/wiki/Percolation_threshold

    The lattice has vertex types (1 ⁄ 2)(3 3,4 2) + (1 ⁄ 2)(3,4,6,4), while the dual lattice has vertex types (1 ⁄ 15)(4 6)+(6 ⁄ 15)(4 2,5 2)+(2 ⁄ 15)(5 3)+(6 ⁄ 15)(5 2,4). The critical point is where the longer bonds (on both the lattice and dual lattice) have occupation probability p = 2 sin (π/18) = 0.347296... which is the bond ...

  3. Thrust-to-weight ratio - Wikipedia

    en.wikipedia.org/wiki/Thrust-to-weight_ratio

    Max take-off weight, full power Boeing 747-8: 0.269 Max take-off weight, full power Boeing 777-200ER: 0.285 Max take-off weight, full power Boeing 737 MAX 8: 0.311 Max take-off weight, full power Airbus A320neo: 0.310 Max take-off weight, full power Boeing 757-200: 0.341 Max take-off weight, full power (w/Rolls-Royce RB211) Tupolev 154B: 0.360

  4. Democracy in the Middle East and North Africa - Wikipedia

    en.wikipedia.org/wiki/Democracy_in_the_Middle...

    The power of the Supreme Leader under Iran's constitution is almost unlimited and unrestricted in practice. This combined with the view that he is the representative of God held by some religious groups, being the head of the security and armed forces, and controlling the official state media (the radio and television are restricted to state ...

  5. List of thermal conductivities - Wikipedia

    en.wikipedia.org/wiki/List_of_thermal_conductivities

    Small granite pillars have failed under loads that averaged out to about 1.43 ⋅ 10 8 Newtons/meter 2 and this kind of rock has a sonic speed of about 5.6 ± 0.3 ⋅ 10 3 m/sec (stp), a density of about 2.7 g/cm 3 and specific heat ranging from about 0.2 to 0.3 cal/g °C through the temperature interval 100-1000 °C [Stowe pages 41 & 59 and ...

  6. List of gravitationally rounded objects of the Solar System

    en.wikipedia.org/wiki/List_of_gravitationally...

    This formula is a simplified version of that in section 2.2 of Stansberry et al., 2007, [39] where emissivity and beaming parameter were assumed to equal unity, and was replaced with 4, accounting for the difference between circle and sphere. All parameters mentioned above were taken from the same paper.

  7. 5.45×39mm - Wikipedia

    en.wikipedia.org/wiki/5.45×39mm

    The 5.45×39mm cartridge is a rimless bottlenecked intermediate cartridge.It was introduced into service in 1974 by the Soviet Union for use with the new AK-74.The 5.45×39mm gradually supplemented and then largely replaced the 7.62×39mm cartridge in Soviet and Warsaw Pact service as the primary military service rifle cartridge.

  8. List of winless seasons - Wikipedia

    en.wikipedia.org/wiki/List_of_winless_seasons

    A winless season is a regular season in which a sports team fails to win any of its games. The antithesis of a perfect season, winless seasons have been suffered twelve times in professional American football, six times in arena football, three times in professional Canadian football, once each in American professional lacrosse and box lacrosse, more than twenty-five times in major Australian ...

  9. Automobile drag coefficient - Wikipedia

    en.wikipedia.org/wiki/Automobile_drag_coefficient

    Average full-size passenger cars have a drag area of roughly 8 sq ft (0.74 m 2). Reported drag areas range from the 1999 Honda Insight at 5.1 sq ft (0.47 m 2) to the 2003 Hummer H2 at 26.5 sq ft (2.46 m 2). The drag area of a bicycle (and rider) is also in the range of 6.5–7.5 sq ft (0.60–0.70 m 2). [5]