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Worksheet Worked examples Practical: Gravitational potential energy to kinetic energy transformation End-of-chapter test Marking scheme: Worksheet Marking scheme: End-of-chapter test
JOURNAL OF ADVANCES IN PHYSICS
The study of physics requires the definition of general characteristics such as the so-called fundamental properties of space and time, which are homogeneity and isotropy. From the application of the homogeneity of time in the integral equations of the movement arises the theorem of the conservation of energy. That the parameter of variation be time leads to defining energy as scalar. Relativistic mechanics has shown that time is one of the dimensions of a tetra-dimensional space and, therefore, an event is projected in the spatial and temporal dimensions, this projection varies according to the reference system that is used. This indicates that equating time to a dimension of space, should be analyzed not only under the condition of homogeneity but also of the isotropy. This leads to analyzing energy as a vector. In classical mechanics, a body moving in a gravitational field its energy can be decomposed in two directions, one that remains constant, normal to the field, and the othe...
Work and Energy, 2022
This manuscript in intended to document the derivation of Work and its use in topics that involve energy
Physics of Magnetic Field and Vector Potential
The carried out analysis showed that the magnetic vector potential is one of the most important concepts of classical electrodynamics, and magnetic field is only a consequence of this potential. The meaningful result is that which in them within the framework Galileo conversions is shown that the scalar potential of charge depends on its relative speed, and this fact found its experimental confirmation. This article details these ideas. The obtained results change the ideological basis of classical electrodynamics, indicating that the substantial part of the observed in the electrodynamics dynamic phenomena, this by the consequences of this dependence. Certainly, the adoption of this concept is critical step. But this step is transparent and intelligible from a physical point of view. Indeed the main parameter of charge are those energy characteristics, which it possesses and how it influences the surrounding charges not only in the static position, but also during its motion. The dependence of scalar potential on the speed leads to the fact that in its environments are generated the electric fields, to reverse fields, that accelerate charge itself. Such dynamic properties of charge allow instead of two symmetrical laws of magnetoelectric and electromagnetic induction to introduce one law of electro-electrical induction, which is the fundamental law of induction. This method gives the possibility to directly solve all problems of induction and emission, without resorting to the application of such pour on mediators as vector potential and magnetic field. This approach makes it possible to explain the origin of the forces of interaction between the current carrying systems. Up to now in the classical electrodynamics existed two not connected with each other of division. From one side this Maxwell's equation, and from which follow wave equations for the electromagnetic pour on, while from other side this of the relationships, which determine power interaction of the current carrying systems. For explaining this phenomenon the postulate about the Lorentz force was introduced. Introduction to the dependence of the scalar potential of charge on the speed mutually connects these with those not connected divisions, and classical electrodynamics takes the form of the ordered united science, which has united ideological basis.