1)magnetic field is a vector field that describes the magnetic influence of electric charges in relative motion and magnetized materials. … Magnetic fields surround and are created by magnetized material and by moving electric charges (currents) such as those used in electromagnets.
1b)Symmetries of fields.
Statistical field theory.
Continuous random fields.
2)scalar is an entity which only has a magnitude – no direction. Examples of scalar quantities include mass, electric charge, temperature, distance, etc. A vector, on the other hand, is an entity that is characterized by a magnitude and a direction.
3)The acceleration due to gravity at the surface of Earth is represented by the letter g. It has a standard value defined as 9.80665 m/s2 ( 32.1740 ft/s2). However, the actual acceleration .
3b)gravitational field is a model used to explain the influence that a massive body extends into the space around itself, producing a force on another massive body. Thus, a gravitational field is used to explain gravitational phenomena, and is measured in new tons per kilogram
4)Magnetic fields can be defined in a number of ways, depending on the context. However, in general terms, it is an invisible field that exerts magnetic force on substances which are sensitive to magnetism. … They can be generated within the vicinity of a magnet, by an electric current, or a changing electrical field.
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