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  2. Orders of magnitude (length) - Wikipedia

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

    4 1 rontometer. 5 10 rontometers. ... cm) is a unit of length ... The Strait of Gibraltar is 13 km (8.1 mi) wide. To help compare different orders of magnitude, ...

  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. International System of Units - Wikipedia

    en.wikipedia.org/wiki/International_System_of_Units

    For example, driving distances are normally given in kilometres (symbol km) rather than in metres. Here the metric prefix 'kilo-' (symbol 'k') stands for a factor of 1000; thus, 1 km = 1000 m. The SI provides twenty-four metric prefixes that signify decimal powers ranging from 10 −30 to 10 30, the most recent being adopted in 2022.

  5. Cubic mile - Wikipedia

    en.wikipedia.org/wiki/Cubic_mile

    4.1682 km 3 A cubic mile (abbreviation: cu mi or mi 3 [ 1 ] ) is an imperial and US customary (non- SI non- metric ) unit of volume , used in the United States, Canada and the United Kingdom. It is defined as the volume of a cube with sides of 1 mile (1.6 km ) length, giving a volume of 1 cubic mile (4.2 km 3 ).

  6. 40.6 cm SK C/34 gun - Wikipedia

    en.wikipedia.org/wiki/40.6_cm_SK_C/34_gun

    42 km (26 mi) (standard shell) The 40.6 cm SK C/34 , [ Note 1 ] sometimes known as the Adolfkanone (Adolf gun), was a German naval gun , designed in 1934 by Krupp and originally intended for the early H-class battleships .

  7. Indonesian units of measurement - Wikipedia

    en.wikipedia.org/wiki/Indonesian_units_of...

    One pikol (or one pecul) was equal to 61.761 3025 kg by its legal definition. [2] Some other units and their legal equivalents are given below: 1 thail = 1 ⁄ 1600 pikol 1 catti = 1 ⁄ 100 pikol

  8. 10.5 cm SK C/32 naval gun - Wikipedia

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

    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. Originally designed as a surface weapon, it was used in a number of other roles such as anti-aircraft and coastal defence ; wet-mounts were developed for U ...

  9. Comparison of World War I tanks - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_World_War_I...

    This is a comparison of the characteristics of tanks used in World War I. ... 4.5 km/h (2.8 mph) 37 km (23 mi) ... 5.7 cm Maxim-Nordenfelt ...