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The power law is often used in wind power assessments [4] [5] where wind speeds at the height of a turbine ( 50 metres) must be estimated from near surface wind observations (~10 metres), or where wind speed data at various heights must be adjusted to a standard height [6] prior to use.
Values of ρ b of b = 1 through b = 6 are obtained from the application of the appropriate member of the pair equations 1 and 2 for the case when h = h b+1. [ 2 ] In these equations, g 0 , M and R * are each single-valued constants, while ρ , L , T and h are multi-valued constants in accordance with the table below.
Sergey Bubka's 1993 pole vault world indoor record of 6.15 m was not considered to be a world record, because it was set before the new rule came into effect. Bubka's world record of 6.14 m, set outdoors in 1994, was surpassed by six consecutive records set indoors, most recently by Armand Duplantis in 2023 with a 6.22 m mark. In 2020 ...
In firearm optics, where 0.1 mrad per click is the most common mrad based adjustment value, another common rule of thumb is that an adjustment of 1 / 10 mrad changes the impact as many centimeters as there are hundreds of meters. In other words, 1 cm at 100 meters, 2.25 cm at 225 meters, 0.5 cm at 50 meters, etc. See the table below
Flight levels [3] are described by a number, which is the nominal altitude, or pressure altitude, in hundreds of feet, and a multiple of 500 ft.Therefore, a pressure altitude of 32,000 ft (9,800 m) is referred to as "flight level 320".
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The meet’s head referee implemented Rule 2, Section 5 of the NCAA rulebook, which states that “a swimmer who changes lanes during a heat shall be disqualified,” leading to Lloyd’s ...
Similarly, for open terrain (grassland) the typical range is 0.01-0.05 m. [2] For cropland, and brush/forest the ranges are 0.1-0.25 m and 0.5-1.0 m respectively. When estimating wind loads on structures the terrains may be described as suburban or dense urban, for which the ranges are typically 0.1-0.5 m and 1-5 m respectively. [2]