## Abstract

The physical quantities that we encounter in physics and applied mathematics (e.g., force, temperature, electric field) are represented by mathematical functions of space and time, hence, functions of several variables. For example, for the force which shows that the force depends explicitly on the three position coordinates (

**F**on a particle we may write$$\text{F} = \,F(x,\,y,\,z,\,t),$$

*x, y, z*) and the time coordinate*t*. The force on the particle depends on where the particle is located in space and on when it is at that point.## Keywords

Vector Field Divergence Theorem Flux Line Gravitational Potential Energy Conservative Force
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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## Copyright information

© Springer-Verlag New York, Inc. 2002