2006-09-07 08:13:31 · 4 answers · asked by sonua 1 in Science & Mathematics ➔ Physics
Most of the phenomea in the Universe are non linear in nature.
However an non linear system can be approximated by a linear one.
Hence for every linear equation to be solvable must have a constant.This is where physical constants are formulated.
All constants must have unit dimensions. Its is not just a number.
2006-09-07 08:36:24 · answer #1 · answered by goring 6 · 0⤊ 1⤋
Quite simply, when building a mathematical model of a physical situation, it is often much easier to approximate the situation by making certain assumptions. Depending on the level of accuracy required, one may make fewer or more assumption.
For example, when looking at parabolic motion close to the Earth's surface, it is normal (especially in basic level academia) to assume that the graviational pull of the Earth upon objects is a constant at all heights. We know, of course, this is not true and the gravitational force is greater nearer the Earths surface.
Hope that helps.
2006-09-08 07:57:55 · answer #2 · answered by sly` 3 · 0⤊ 1⤋
I do not understand your question, but this may help.
The exact value of certain constants are taken as definition (like the speed of light). A bunch of qualified people got together at one point and agreed.
Others are defined as a physical process (like a second is defined by an atomic process involving Cesium).
Others are defined in terms of other constants (like a meter is defined in terms of the speed of light and length of a second).
2006-09-07 16:17:32 · answer #3 · answered by tomz17 2 · 1⤊ 0⤋
a complete guess work
2006-09-08 02:12:35 · answer #4 · answered by Anonymous · 0⤊ 1⤋