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...w than a simple average as a simple average would violate the [[second Law of Thermodynamics]]. ==Equations for a perfect gas== ...

...at can be used to describe devices that do not produce significant amounts of electromagnetic waves. For instance the capacitor and the coil in [[electri ...s to a situation where all time derivatives can be neglected. However some equations can be considered as quasistatic while others are not, leading to a system ...

{{short description|Line integral of the fluid velocity around a closed curve}} ...te the projection of {{math|'''v'''}} along {{math|''d'''''l'''}} and curl of {{math|'''v'''}} may be in the negative sense, reducing the circulation.]] ...

...along with the [[body force]] of [[gravity]] ''mg'' acting at the [[center of mass]].]] [[Normal force]]s and [[shear force]]s between objects are types of surface force. All [[cohesive force]]s and [[contact force]]s between objec ...

This article summarizes [[equation]]s in the theory of [[fluid mechanics]]. ...the component of flux passing through the surface, multiplied by the area of the surface (see [[dot product]]). For this reason flux represents physical ...

{{Short description|Mean kinetic energy per unit mass of eddies in turbulent flow}} ...[Reynolds-averaged Navier–Stokes equations|Reynolds-averaged Navier Stokes equations]], the turbulence kinetic energy can be calculated based on the closure met ...

{{Short description|Measure of fluid stability against vertical displacement}} ...d after [[David Brunt]] and [[Vilho Väisälä]]. It can be used as a measure of atmospheric stratification. ...

{{Continuum mechanics|cTopic=fluid}} ...ids, Non-Newtonian Fluids, & Facts |url=https://www.britannica.com/science/fluid-physics |website=Encyclopedia Britannica |access-date=2 June 2021 |language ...

{{Short description|Overview of mechanical engineering technology}} ...of engineering principles and technological developments for the creation of useful [[Product (business)|product]]s and production machinery.<ref>{{Cite ...

...|Expression frequently encountered in mathematical physics, generalization of Laplace's equation}} ...ur la théorie du magnétisme en mouvement |trans-title=Memoir on the theory of magnetism in motion | url=https://www.biodiversitylibrary.org/item/55214#pa ...

{{short description|Branch of fluid mechanics that studies fluids at rest}} ...and Hydrostatics, from the 1728 ''[[Cyclopædia, or an Universal Dictionary of Arts and Sciences|Cyclopædia]]'']] ...

...description|Mechanical stiffness, or inverse of electrical capacitance or fluid flow compliance}} ...c engineers. The value of [[capacitor]]s is invariably specified in units of capacitance rather than inverse capacitance. However, it is used in theore ...

{{Short description|Overview of and topical guide to physics}} {{see also|Index of physics articles}} ...

[[File:VFPt charges plus minus thumb.svg|220px|thumb|right|Illustration of the electric field surrounding a positive (red) and a negative (blue) charg ...ector fields]] at each point in spacetime, or as a [[Covariant formulation of classical electromagnetism|single-rank 2-tensor]] field.<ref>[https://youtu ...

{{short description|Vector field that is the gradient of some function}} ...o points does not change the value of the line integral. Path independence of the line integral is equivalent to the vector field under the line integral ...

...r force]].<ref>{{citation|title=Evaluating Vehicle Mobility Using Bekker's Equations|publisher=U.S. Army TARDEC|date=2000|url=https://apps.dtic.mil/dtic/tr/full ...]] and is termed the ''coefficient of traction'' (similar to [[coefficient of friction]]). It is the force which makes an object move over the surface by ...

...flow|flow of a fluid in a pipe]], in [[solid state physics]] the response of a crystal to an electric field, or in [[structural analysis]], the connecti ...avior.<ref name=Truesdell>{{cite book |title=The Non-linear Field Theories of Mechanics |author=Clifford Truesdell & Walter Noll; Stuart S. Antman, edito ...

This article summarizes [[equation]]s in the theory of [[electromagnetism]]. ...harge|charge]] ''q'') in motion (velocity '''v'''), used as the definition of the [[electric field|'''E''' field]] and [[magnetic field|'''B''' field]].] ...

This article summarizes [[equation]]s in the theory of [[quantum mechanics]]. | varies with situation and number of particles ...

This article summarizes [[equation]]s in the theory of [[wave]]s. ...ity and acceleration refer to the kinematics in the oscillating directions of the wave - transverse or longitudinal (mathematical description is identica ...