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The average width of a tornado according to the National Weather Service is 50 yards (46 m). [1] The official widest tornado in history is the 2013 El Reno tornado , which a confirmed width of 2.6 miles (4.2 km), with the World Meteorological Organization believing the width could have been up to 1 mile (1.6 km) wider.
To help compare different orders of magnitude, the following list describes various speed levels between approximately 2.2 × 10 −18 m/s and 3.0 × 10 8 m/s (the speed of light). Values in bold are exact.
Hypervelocity is very high velocity, approximately over 3,000 meters per second (11,000 km/h, 6,700 mph, 10,000 ft/s, or Mach 8.8). In particular, hypervelocity is velocity so high that the strength of materials upon impact is very small compared to inertial stresses. [1] Thus, metals and fluids behave alike under hypervelocity impact.
A board foot is a United States and Canadian unit of approximate volume, used for lumber. It is equivalent to 1 inch × 1 foot × 1 foot (144 cu in or 2,360 cm 3). It is also found in the unit of density pounds per board foot. In Australia and New Zealand the terms super foot or superficial foot were formerly used for this unit. The exact ...
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The trains leaves the station with a small dip and turnaround out of the station tracking towards the 150-foot-tall (46 m) chain lift hill. Once at the top, riders twist down a 128-foot-tall (39 m) left-handed drop and into a 104-foot-tall (32 m) vertical loop , reaching speeds of up to 60 miles per hour (97 km/h).
1.75 m – (5 feet 8 inches) – height of average U.S. male human as of 2002 (source: U.S. CDC as per female above) 2.4 m – wingspan of a mute swan; 2.5 m – height of a sunflower; 2.7 m – length of a leatherback sea turtle, the largest living turtle; 2.72 m – (8 feet 11 inches) – tallest-known human (Robert Wadlow) [31]
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