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The official SI symbols are g/cm 3, g·cm −3, or g cm −3. It is equivalent to the units gram per millilitre (g/mL) and kilogram per litre (kg/L). The density of water is about 1 g/cm 3 , since the gram was originally defined as the mass of one cubic centimetre of water at its maximum density at 4 °C (39 °F).
2 He helium-4; Hoffer et al. 0.19085 g/cm 3 (from 20.9730 cm 3 /mole; hcp crystal melting to He-II superfluid at 0 K, 25.00 atm) : 0.19083 g/cm 3 (from 20.9749 cm 3 /mole; at local min. density, hcp melting to He-II: 0.884 K, 25.00 atm)
Krupp had anticipated on this demand by producing the 30.5 cm RK L/22 in 1872. This gun was exhibited at the 1873 Vienna World's Fair. [13] In 1874 Germany ordered three 30.5 cm RK L/22. [14] It tested these in 1875, but the decision to buy a 30.5 cm gun (the 30.5 cm MRK L/22) would only be taken in 1876. [15] 1875 was a difficult year for ...
Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75
A litre is a cubic decimetre, which is the volume of a cube 10 centimetres × 10 centimetres × 10 centimetres (1 L ≡ 1 dm 3 ≡ 1000 cm 3). Hence 1 L ≡ 0.001 m 3 ≡ 1000 cm 3 ; and 1 m 3 (i.e. a cubic metre, which is the SI unit for volume) is exactly 1000 L.
In the CGS-ESU system, charge q is therefore has the dimension to M 1/2 L 3/2 T −1. Other units in the CGS-ESU system include the statampere (1 statC/s) and statvolt (1 erg/statC). In CGS-ESU, all electric and magnetic quantities are dimensionally expressible in terms of length, mass, and time, and none has an independent dimension.
2 cm – approximate width of an adult human finger; 2.54 cm – 1 inch; 3.08568 cm – 1 attoparsec; 3.4 cm – length of a quail egg [112] 3.5 cm – width of film commonly used in motion pictures and still photography; 3.78 cm – amount of distance the Moon moves away from Earth each year [113] 4.3 cm – minimum diameter of a golf ball [114]
Cavendish's result was first improved upon by John Henry Poynting (1891), [24] who published a value of 5.49(3) g⋅cm −3, differing from the modern value by 0.2%, but compatible with the modern value within the cited relative standard uncertainty of 0.55%.