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L'atmosphère est l'enveloppe gazeuse qui entoure certains astres : atmosphère stellaire pour une étoile, atmosphère planétaire pour un corps planétaire ( planète, planète naine ou satellite, voire une exoplanète ). Dans le cas d'une planète « gazeuse », l'atmosphère désigne la partie de la planète dont la matière est en phase ...
جو (atmosphere اختصاراً atm) هي وحدة عالمية لقياس الضغط وتعادل 101325 باسكال.. التاريخ. اعتمدت وحدة الجو لقياس الضغط عام 1954 في المؤتمر العام للأوزان والمقاييس على أنها تساوي بدقة مقدار 1,013,250 داين لكل سنتيمتر مربع، أي ما يعادل 101325 ...
This is an audio version of the Wikipedia Article:https://en.wikipedia.org/wiki/Atmosphere_(unit)00:00:16 1 History00:00:34 2 Pressure units and equivalencie...
The standard atmosphere (symbol: atm) is an international reference pressure defined as 101325 Pa and formerly used as a unit of pressure.[1] For practical purposes it has been replaced by the bar which is 105 Pa.[1] The difference of about 1% is not significant for many applications, and is...
The drag coefficient is always associated with a particular surface area. [3] The drag coefficient of any object comprises the effects of the two basic contributors to fluid dynamic drag: skin friction and form drag. The drag coefficient of a lifting airfoil or hydrofoil also includes the effects of lift-induced drag.
Precipitation is a major component of the water cycle, and is responsible for depositing fresh water on the planet. Approximately 505,000 cubic kilometres (121,000 cu mi) of water falls as precipitation each year: 398,000 cubic kilometres (95,000 cu mi) over oceans and 107,000 cubic kilometres (26,000 cu mi) over land. [5]
A slug is defined as a mass that is accelerated by 1 ft/s 2 when a net force of one pound (lbf) is exerted on it. [2] One slug is a mass equal to 32.17405 lb (14.59390 kg) based on standard gravity, the international foot, and the avoirdupois pound. [3] In other words, at the Earth's surface (in standard gravity), an object with a mass of 1 ...
