Question

Explain the use of dimensional analysis to check the correctness of physical equations

Answer 1

When doing physics problems, we'll often be required to calculate the numerical value and determine the units of a variable in the equations. The numerical values usually aren't too difficult to get, but , the same can't be said for the units. These units deal with dimensional analysis, which is a useful method for determining the units of a variable in an equation. A main use of dimensional analysis is in checking the correctness of an equation which we have derived by algebraic manipulations. Even a minor error in algebra can be detected because it will often result in a dimensionally incorrect equation.

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Answer 2

Answer:

To check the correctness of physical equation:

We can check the correctness of thephysical equation using the principle of homogeneity. By the principle of homogeneity of dimensions, thedimensions of all the terms on the two sides of an equation must be the same...

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