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For example, the Spanish reflexive construct "se hundió el barco" ("the boat sank") has no reflexive equivalent in some Slavic languages (which use an intransitive equivalent of sink), though for example Czech and Slovak do use a reflexive verb: "loď se potopila"/"loď sa potopila". Reflexive verbs can have a variety of uses and meanings ...
The conservation of mass is expressed locally by the fact that the flow of mass density satisfies the continuity equation: + =, where is the mass flux vector. The formulation of energy conservation is generally not in the form of a continuity equation because it includes contributions both from the macroscopic mechanical energy of the fluid flow and of the microscopic internal energy.
This is an accepted version of this page This is the latest accepted revision, reviewed on 14 January 2025. Law of physics and chemistry This article is about the law of conservation of energy in physics. For sustainable energy resources, see Energy conservation. Part of a series on Continuum mechanics J = − D d φ d x {\displaystyle J=-D{\frac {d\varphi }{dx}}} Fick's laws of diffusion Laws ...
A reciprocal construction (abbreviated RECP) is a grammatical pattern in which each of the participants occupies both the role of agent and patient with respect to the other. An example is the English sentence John and Mary criticized each other : John criticized Mary, and Mary criticized John.
The Lorentz reciprocity theorem is simply a reflection of the fact that the linear operator ^ relating and at a fixed frequency (in linear media): = ^ where ^ [()] is usually a symmetric operator under the "inner product" (,) = for vector fields and . [8] (Technically, this unconjugated form is not a true inner product because it is not ...
Conservation of energy was not established as a universal principle until it was understood that the energy of mechanical work can be dissipated into heat. [ 137 ] [ 138 ] With the concept of energy given a solid grounding, Newton's laws could then be derived within formulations of classical mechanics that put energy first, as in the Lagrangian ...
Although in many cases, either a reflexive or a reciprocal pronoun could appear in the same structural position, in some cases, the asymmetry occurs when a reciprocal may be bound to its antecedent, but a reflexive may not. The following examples from Lebeaux (1983) show that in some sentences, either type of anaphor could be used: (5) a.
The principle of conservation of mechanical energy states that if an isolated system is subject only to conservative forces, then the mechanical energy is constant. If an object moves in the opposite direction of a conservative net force, the potential energy will increase; and if the speed (not the velocity ) of the object changes, the kinetic ...