enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Densities of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Densities_of_the_elements...

    2 He helium-4; Hoffer et al. 0.19085 g/cm 3 (from 20.9730 cm 3 /mole; hcp crystal melting to He-II superfluid at 0 K, 25.00 atm) : 0.19083 g/cm 3 (from 20.9749 cm 3 /mole; at local min. density, hcp melting to He-II: 0.884 K, 25.00 atm)

  3. Shotgun cartridge - Wikipedia

    en.wikipedia.org/wiki/Shotgun_cartridge

    One improvised method for achieving the same effect involves pouring molten wax or tar into the mass of shot. [18] Another is a partial ring cut around the case intended to ensure the shot comes out tightly bunched along with the portion of the case forward of the cut, creating a 'cut-shell'. [ 19 ]

  4. Space Shuttle Solid Rocket Booster - Wikipedia

    en.wikipedia.org/wiki/Space_Shuttle_Solid_Rocket...

    [10] The SRBs were the largest solid-propellant motors ever flown and the first of such large rockets designed for reuse. [11] Each is 149.16 ft (45.46 m) long and 12.17 ft (3.71 m) in diameter. Each SRB weighed approximately 1,300,000 lb (590 t) at launch. The two SRBs constituted about 69% of the total lift-off mass.

  5. Kilogram-force per square centimetre - Wikipedia

    en.wikipedia.org/wiki/Kilogram-force_per_square...

    A newton is equal to 1 kg⋅m/s 2, and a kilogram-force is 9.80665 N, [3] meaning that 1 kgf/cm 2 equals 98.0665 kilopascals (kPa). In some older publications, kilogram-force per square centimetre is abbreviated ksc instead of kg/cm 2.

  6. Space Shuttle Columbia disaster - Wikipedia

    en.wikipedia.org/wiki/Space_Shuttle_Columbia...

    At T+81.7 seconds, a piece of foam approximately 21 to 27 inches (53 to 69 cm) long and 12 to 18 inches (30 to 46 cm) wide broke off from the left bipod on the ET. At T+81.9 seconds, the foam struck the reinforced carbon–carbon (RCC) panels on Columbia ' s left wing at relative velocity of 625 to 840 feet per second (426 to 573 mph; 686 to ...

  7. Moon - Wikipedia

    en.wikipedia.org/wiki/Moon

    The Moon is Earth's only natural satellite. It orbits at an average distance of 384,400 km (238,900 mi), about 30 times the diameter of Earth. Tidal forces between Earth and the Moon have synchronized the Moon's orbital period (lunar month) with its rotation period at 29.5 Earth days, causing the same side of the Moon to always face Earth.

  8. Saturn - Wikipedia

    en.wikipedia.org/wiki/Saturn

    Saturn is named after the Roman god of wealth and agriculture, who was the father of the god Jupiter.Its astronomical symbol has been traced back to the Greek Oxyrhynchus Papyri, where it can be seen to be a Greek kappa-rho ligature with a horizontal stroke, as an abbreviation for Κρονος (), the Greek name for the planet (). [35]

  9. Grade (climbing) - Wikipedia

    en.wikipedia.org/wiki/Grade_(climbing)

    Adam Ondra on the sport climbing route Silence, the hardest free climbing route in the world and the first-ever at 9c (French), 5.15d (American YDS), and XII+ (UIAA).. The two main free climbing grading systems (which include the two main free climbing disciplines of sport climbing and traditional climbing) are the "French numerical system" and the "American YDS system". [2]