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:
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Answer:</h2><h3>Effects of global warming on the economy are:-</h3>
- It changes the places where humans will feel comfortable living.
- It will change the way industry and people use fossil fuels.
- Global warming affects the geography within which the global economy operates.
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Explanation:</h2>
Answer:
1) if mother nature pressures a species to evolve they will not evolve right therefore they past on to their offspring and the they die.
2)mass extinction occurs when something BIG happens take dinosaures for ex they were wiped out by something HUGE this was all proving by sci because of the fossils
3) the meteor (i think)
4) i don't know
Explanation:
sorry if I am wrong for any of these
have a nice day
The answer is: convection of the core
Americas economic activity has increased in the last year
