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  2. Molar volume - Wikipedia

    en.wikipedia.org/wiki/Molar_volume

    The ideal gas equation can be rearranged to give an expression for the molar volume of an ideal gas: = = Hence, for a given temperature and pressure, the molar volume is the same for all ideal gases and is based on the gas constant: R = 8.314 462 618 153 24 m 3 ⋅Pa⋅K −1 ⋅mol −1, or about 8.205 736 608 095 96 × 10 −5 m 3 ⋅atm⋅K ...

  3. g-force - Wikipedia

    en.wikipedia.org/wiki/G-force

    The g-force acting on a stationary object resting on the Earth's surface is 1 g (upwards) and results from the resisting reaction of the Earth's surface bearing upwards equal to an acceleration of 1 g, and is equal and opposite to gravity. The number 1 is approximate, depending on location. The g-force acting on an object in any weightless ...

  4. Angstrom - Wikipedia

    en.wikipedia.org/wiki/Angstrom

    It was only in 1960, when the metre was redefined in the same way, that the angstrom became again equal to 10 −10 metre. Yet the angstrom was never part of the SI system of units, [ 13 ] [ 14 ] and has been increasingly replaced by the nanometre ( 10 −9 m) or picometre ( 10 −12 m).

  5. Machine learning - Wikipedia

    en.wikipedia.org/wiki/Machine_learning

    Machine learning (ML) is a field of study in artificial intelligence concerned with the development and study of statistical algorithms that can learn from data and generalize to unseen data, and thus perform tasks without explicit instructions. [1]

  6. Athens - Wikipedia

    en.wikipedia.org/wiki/Athens

    Greece attracted 26.5 million visitors in 2015, 30.1 million visitors in 2017, and over 33 million in 2018, making Greece one of the most visited countries in Europe and the world, and contributing 18% to the country's GDP. Athens welcomed more than 5 million tourists in 2018, and 1.4 million were "city-breakers"; this was an increase by over a ...