Answer:
In vector calculus, the curl is a vector operator that describes the infinitesimal rotation of a vector field in three-dimensional Euclidean space. At every point in the field, the curl of that point is represented by a vector. The attributes of this vector (length and direction) characterize the rotation at that point. The direction of the curl is the axis of rotation, as determined by the right-hand rule, and the magnitude of the curl is the magnitude of rotation. If the vector field represents the flow velocity of a moving fluid, then the curl is the circulation density of the fluid. A vector field whose curl is zero is called irrotational. The curl is a form of differentiation for vector fields. The corresponding form of the fundamental theorem of calculus is Stokes' theorem, which relates the surface integral of the curl of a vector field to the line integral of the vector field around the boundary curve.
The alternative terminology rotation or rotational and alternative notations rot F and ∇ × F are often used (the former especially in many European countries, the latter, using the del (or nabla) operator and the cross product, is more used in other countries) for curl F.
Unlike the gradient and divergence, curl does not generalize as simply to other dimensions; some generalizations are possible, but only in three dimensions is the geometrically defined curl of a vector field again a vector field. This is a phenomenon similar to the 3-dimensional cross product, and the connection is reflected in the notation ∇ × for the curl.
Explanation:
Answer:
Durante la etapa agroexportadora la cantidad de vías de ferrocarril aumentó.
Explanation:
Durante la etapa agroexportadora hubo un considerable aumento en el número de vías de ferrocarril que permitió que los diferentes productos provenientes del campo llegarán al puerto para ser exportados. El tren disminuyó los costos y el tiempo de traslado de las mercaderías favoreciendo así a la economía ya que se abarataron los costos, más productores pudieron exportar su materia prima y más productos pudieron ingresar a diferentes partes del país de forma más eficaz beneficiando al crecimiento económico y social.
C is the answer.
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Answer:
Yes, they share the history.
Explanation:
Fifteen-hundred-year ago Christianity is the main religion of African people and with the invasion of Muslims on Africa and conquering many areas, many local people impress from Muslim's behavior and accepted Islam. Christianity was the religion of american people from a long time while it was the initial days of Islam so we can say that Christianity and Islam share a fifteen-hundred-year history in Africa.
