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In aviation, a flight level (FL) is an aircraft's altitude as determined by a pressure altimeter using the International Standard Atmosphere. It is expressed in hundreds of feet or metres . The altimeter setting used is the ISA sea level pressure of 1013 hPa or 29.92 inHg .
In unit systems where force is a derived unit, like in SI units, g c is equal to 1. In unit systems where force is a primary unit, like in imperial and US customary measurement systems, g c may or may not equal 1 depending on the units used, and value other than 1 may be required to obtain correct results. [2]
35 mm equivalent focal lengths are calculated by multiplying the actual focal length of the lens by the crop factor of the sensor. Typical crop factors are 1.26× – 1.29× for Canon (1.35× for Sigma "H") APS-H format, 1.5× for Nikon APS-C ("DX") format (also used by Sony, Pentax, Fuji, Samsung and others), 1.6× for Canon APS-C format, 2× for Micro Four Thirds format, 2.7× for 1-inch ...
All values refer to 25 °C and to the thermodynamically stable standard state at that temperature unless noted. Values from CRC refer to "100 kPa (1 bar or 0.987 standard atmospheres)".
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
Heat capacity, c p: 150. J/(mol K) 6 °C - 11 °C Liquid properties Std enthalpy change of formation, Δ f H o liquid –669.6 kJ/mol Standard molar entropy, S o liquid: 206.3 J/(mol K) [4] Enthalpy of combustion, Δ c H o –1654.3 kJ/mol Heat capacity, c p: 221.9 J/(mol K) at 25 °C Gas properties Std enthalpy change of formation, Δ f H o ...
Heat capacity, c p [2] 96 J/(mol K) Liquid properties Std enthalpy change of formation, Δ f H o liquid: −249.4 kJ/mol Standard molar entropy, S o liquid: 200.4 J/(mol K) Enthalpy of combustion, Δ c H o –1785.7 kJ/mol Heat capacity, c p: 125.5 J/(mol K) Gas properties Std enthalpy change of formation, Δ f H o gas: −218.5 kJ/mol Standard ...
at 30 °C 0.4873 mPa·s: at 35 °C 0.4599 mPa·s: at 40 °C 0.4349 mPa·s: at 45 °C 0.4120 mPa·s: at 50 °C Thermodynamic properties. Phase behavior