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Miners also use it as a unit of area equal to 6 feet square (3.34 m 2) in the plane of a vein. [2] In Britain, it can mean the quantity of wood in a pile of any length measuring 6 feet (1.8 m) square in cross section. [2] In Central Europe, the klafter was the corresponding unit of comparable length, as was the toise in France.
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.
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. [2]
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]
Alan Webb, the U.S. national and high school record holder. This is a list of American high school students who have run a four-minute mile since the feat was first accomplished in 1964. The first person to run the mile (1,760 yards, or 1,609.344 metres) in under four minutes was Roger Bannister in 1954, in a time of 3:59.4. [1]
Vessel is a 16-story, 150-foot-tall (46 m) [1] structure of connected staircases among the buildings of Hudson Yards, located in the 5-acre (2.0 ha) Hudson Yards Public Square. [2] Designed by Thomas Heatherwick , [ 3 ] Vessel has 154 flights, 2,500 steps, and 80 landings, [ 3 ] with the total length of the stairs exceeding 1 mile (1.6 km). [ 4 ]
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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).