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  2. Orders of magnitude (length) - Wikipedia

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

    The centimetre (SI symbol: cm) is a unit of length in the metric system equal to 10 −2 metres (⁠ 1 / 100 ⁠ m = 0.01 m). To help compare different orders of magnitude , this section lists lengths between 10 −2 m and 10 −1 m (1 cm and 1 dm).

  3. List of conversion factors - Wikipedia

    en.wikipedia.org/wiki/List_of_conversion_factors

    km/h ≡ 1 km/h = 2. 7 × 10 −1 m/s knot: kn ≡ 1 nmi/h = 1.852 km/h = 0.51 4 m/s knot (Admiralty) kn ≡ 1 NM (Adm)/h = 1.853 184 km/h [29] = 0.514 77 3 m/s mach number: M: Ratio of the speed to the speed of sound [note 1] in the medium (unitless). ≈ 340 m/s in air at sea level ≈ 295 m/s in air at jet altitudes metre per second (SI unit ...

  4. 10.5 cm SK C/32 naval gun - Wikipedia

    en.wikipedia.org/wiki/10.5_cm_SK_C/32_naval_gun

    Horizontal: 15 kilometers (16,000 yd) at +44.4° Ceiling: 10,300-metre (33,800 ft) at +80° [ 1 ] The 10.5 cm SK C/32 ( SK - Schiffskanone (ship board cannon) C - Construktionsjahr (year of design), was a widely used German naval gun on a variety of Kriegsmarine ships during World War II .

  5. List of countries by road network size - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_road...

    This is a list of countries (or regions) by total road network size, both paved and unpaved.Also included is additional data on the length of each country or region's controlled-access highway network (also known as a motorway, expressway, freeway, etc.), designed for high vehicular traffic.

  6. 10.5 cm SK L/40 naval gun - Wikipedia

    en.wikipedia.org/wiki/10.5_cm_SK_L/40_naval_gun

    The 10.5 cm SK L/40 gun weighed 1,555 kilograms (3,428 lb), had an overall length of 4.475 m (14 ft 8.2 in). It used a horizontal sliding-block breech design.

  7. 155 mm caliber - Wikipedia

    en.wikipedia.org/wiki/155_mm_caliber

    Maximum range of the DM131 is 30 and 40 km (19 and 25 mi) respectively from 39- and 52-calibre barrelled howitzers. [6] Germany: SMArt 155: 2000–current A carrier shell with two anti-armour and anti-artillery submunitions. Maximum range of 22.5 km (14.0 mi) from a 39-calibre howitzer and 27.5 km (17.1 mi) from a 52-calibre howitzer. [7] Israel

  8. 7.5 cm KwK 40 - Wikipedia

    en.wikipedia.org/wiki/7.5_cm_KwK_40

    The 7.5 cm KwK 40 (7.5 cm Kampfwagenkanone [a] 40) was a German 75 mm Second World War era vehicle-mounted gun, used as the primary armament of the German Panzer IV (F2 model onwards) medium tank and the Sturmgeschütz III (F model onwards) and Sturmgeschütz IV assault guns which were used as tank destroyers.

  9. Historical Russian units of measurement - Wikipedia

    en.wikipedia.org/wiki/Historical_Russian_units...

    It was standardized by Peter the Great in the 18th century to measure exactly twenty-eight English inches (71.12 cm). Thus, 80 vershoks = 20 pyad's = 5 arshins = 140 English inches (355.60 cm). Thus, 80 vershoks = 20 pyad's = 5 arshins = 140 English inches (355.60 cm).