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2.5 × 10 ^ 2: 2 hours: 125,000 (125 mSv/hour) Whole body dose exclusion zone criteria for US nuclear reactor siting [16] (converted from 25 rem) 250 2.5 × 10 ^ 2: Acute-USA EPA voluntary maximum dose for emergency non-life-saving work [6] 400-900 4–9 × 10 ^ 2: Annual: 46-103: Unshielded in interplanetary space. [17] 500 5 × 10 ^ 2: Annual: 57
5 m – length of an elephant; 5.2 m – height of a giraffe [123] 5.5 m – height of a Baluchitherium, the largest land mammal ever lived; 6.5 m – wingspan of Argentavis, the largest flying bird known; 6.7 m – length of a Microchaetus rappi; 7.4 m – wingspan of Pelagornis, the bird with longest wingspan ever. [124]
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). The US National Institute of Standards and Technology (NIST) defines the Olympic swimming pool as 1 million litres, which is the approximate volume of the smaller FR2 pool.
1–4 m 2: Area of the top of an office desk 10 1 10–20 m 2: A parking space 70 m 2: Approximate surface area of a human lung [28] 10 2: 1 square decametre (dam 2) 100 m 2: One are (a) 162 m 2: Size of a volleyball court (18 × 9 metres) [29] 202 m 2: Floor area of a median suburban three-bedroom house in the US in 2010: 2,169 sq ft (201.5 m ...
Its symbol is written in several forms as m/s 2, m·s −2 or ms −2, , or less commonly, as (m/s)/s. [ 1 ] As acceleration, the unit is interpreted physically as change in velocity or speed per time interval, i.e. metre per second per second and is treated as a vector quantity.
A centimetre of water [1] is a unit of pressure. It may be defined as the pressure exerted by a column of water of 1 cm in height at 4 °C (temperature of maximum density) at the standard acceleration of gravity, so that 1 cmH 2 O (4°C) = 999.9720 kg/m 3 × 9.80665 m/s 2 × 1 cm = 98.063754138 Pa ≈ 98.0638 Pa, but conventionally a nominal maximum water density of 1000 kg/m 3 is used, giving ...
Waves measuring 0.68 m (2 ft 3 in) were recorded in the port of Callao, 0.72 m (2 ft 4 in) in Marcona District and 0.65 m (2 ft 2 in) in Paita. [136] Significant sea level disturbances were measured off the coast of Ecuador's La Libertad, Esmeraldas and Manta. At 02:33 local time, a 50 cm (20 in) rise in sea level was measured on the mainland.
The flight descended uncommanded from 13,000 ft (4,000 m) to 11,600 ft (3,500 m) before Captain Klopfenstein was able to extend the flaps on the wings. At this time, the flight had an indicated airspeed of 90–100 kn (100–120 mph) and roughly 1.5–2 in (3.8–5.1 cm) thick ice. [3]