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  2. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    An Olympic-size swimming pool holds over 2 acre-feet of water For larger volumes of liquid, one measure commonly used in the media in many countries is the Olympic-size swimming pool. [47] A 50 m × 25 m (164 ft × 82 ft) Olympic swimming pool, built to the FR3 minimum depth of 2 metres (6.6 ft) would hold 2,500 m 3 (660,000 US gal).

  3. Orders of magnitude (length) - Wikipedia

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

    15.24 meterswidth of an NBA basketball court (50 feet) 18.44 meters – distance between the front of the pitcher's rubber and the rear point of home plate on a baseball field (60 feet, 6 inches) [126] 20 meters – length of cricket pitch (22 yards) [127] 27.43 meters – distance between bases on a baseball field (90 feet) 28 meters ...

  4. Orders of magnitude (volume) - Wikipedia

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

    Volume of an Olympic size swimming pool of minimal depth (50 m × 25 m × 2 m). 3.054 × 10 3: Volume of each of the nine spheres of the Atomium in Brussels 1.13 × 10 4: Gas volume in the first zeppelin LZ 1: 1.1866 × 10 4: Amount of concrete in Trbovlje Chimney: 1.56 × 10 4: Quebec's 2001 output of maple syrup: 5.0 × 10 4: Typical volume ...

  5. Guide number - Wikipedia

    en.wikipedia.org/wiki/Guide_number

    The guide number here (full power setting, ISO 100, and normal-angle coverage) is 37 for calculations made in meters (yellow arrow) and 120 for feet (orange). For instance, on the foot scale, f /4 × 30 ft = 120, as do both f /8 × 15 ft and f /16 × 7.5 ft. In meters, f /1.4 × 26 m = 37 as do f /22 × 1.7 m and every combination between.

  6. Parshall flume - Wikipedia

    en.wikipedia.org/wiki/Parshall_flume

    So, if there is a depth of 3 feet, the flow rate is ≈ 140 ft 3 /s Approximate the discharge using the derived discharge equation shown above (Equation 5). This equation was derived using the principles of specific energy and is only to serve as an estimate for the actual discharge of the Parshall flume.

  7. Orders of magnitude (area) - Wikipedia

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

    Size of the primary mirror of the Extremely Large Telescope, the largest optical telescope in the world (under construction) [34] 10 3: 1 kilo square meter k(m 2) 1,000 m 2: Surface area of a modern stremma or dunam: 1,250 m 2: Surface area of the water in an Olympic-size swimming pool [35] 4,047 m 2: 1 acre [36] 5,400 m 2: Size of an American ...

  8. Great Lakes - Wikipedia

    en.wikipedia.org/wiki/Great_Lakes

    The lakes contain about 84% of the surface freshwater of North America; [48] if the water were evenly distributed over the entire continent's land area, it would reach a depth of 5 feet (1.5 meters). [49] This is enough water to cover the 48 contiguous U.S. states to a uniform depth of 9.5 feet (2.9 m).

  9. Speed of sound - Wikipedia

    en.wikipedia.org/wiki/Speed_of_sound

    At a constant temperature, the gas pressure has no effect on the speed of sound, since the density will increase, and since pressure and density (also proportional to pressure) have equal but opposite effects on the speed of sound, and the two contributions cancel out exactly. In a similar way, compression waves in solids depend both on ...