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The mass of 1 litre of water is about 1 kg (kilogram). [12] ... an area of 1 000 000 square metres and not 1000 square metres. 2 Mm 3 means two cubic megametres, ...
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 ... 1 yotta square ...
The base units are defined in terms of the defining constants. For example, the kilogram is defined by taking the Planck constant h to be 6.626 070 15 × 10 −34 J⋅s, giving the expression in terms of the defining constants [1]: 131 1 kg = (299 792 458) 2 / (6.626 070 15 × 10 −34)(9 192 631 770) h Δν Cs / c 2 .
The kilogram per cubic metre (symbol: kg·m −3, or kg/m 3) is the unit of density in the International System ... The density of water is about 1000 kg/m 3 or 1 g ...
The hyl is a unit of mass equal to 1 kgf⋅m −1 ⋅s 2 (9.806 65 kg). The poncelet (p) is a unit of power equal to 1 kgf ⋅m⋅s −1 ( 980.665 W ). The technical atmosphere (at) is a (non-coherent) unit of pressure equal to 1 kgf ⋅cm −2 ( 98 066 .5 Pa ).
The square kilometre (square kilometer in American spelling; symbol: km 2) is a multiple of the square metre, the SI unit of area or surface area. 1 km 2 is equal to: 1,000,000 square metres (m 2) 100 hectares (ha) It is also approximately equal to: 0.3861 square miles [2] 247.1 acres [3] Conversely: 1 m 2 = 0.000001 (10 −6) km 2; 1 hectare ...
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 ...
A cubic metre of pure water at the temperature of maximum density (3.98 °C) and standard atmospheric pressure (101.325 kPa) has a mass of 1000 kg, or one tonne.At 0 °C, the freezing point of water, a cubic metre of water has slightly less mass, 999.972 kilograms.