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Pression

De Wikipedia, le encyclopedia libere
Pression
subclasse de: ISQ derived quantity[*], scalar[*], grandor physic, intensive quantity[*], areal quantity[*]


Commons: Pressure

In physica, pression[1] (denotate P o p) es le fortia applicate a o distribuite super un superficie[2]. Illo ha dimensions de fortia per unitate de area, P = F/A, o energia per unitate de volumine (densitate de energia). Pression es un specie de scalar quantitate physic. In thermodynamica, pression es proportional al producto de temperatura T e densitate numeric n, P = nkT, ubi k es le constante de Boltzmann. Un alternative formulation es PV = NRT.

Unitates de pression include:

  • Pascal (unitate del SI)
  • Barye (unitate del cgs)
  • Bar (unitate tolerate)

Referentias

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  1. Derivation (in ordine alphabetic): (ca) Pressió || (de) Druck (Physik) || (en) Pressure || (es) Presión || (fr) Pression || (it) Pressione || (pt) Pressão || (ro) Presiune || (ru) Давление
  2. CRC Handbook of Chemistry and Physics, 56th Edition, p. F-112