Question

Why do we need to non dimensionalize the physical quantity?

Answer 1

Answer:

In dimensional analysis, a dimensionless quantity is a quantity to which no physical dimension is .

All pure numbers are dimensionless quantities, for example 1, i, π, e, and φ

Answer 2

Answer:

There is no physical quantity which has dimensions but no units, because units are derived from the dimensional analysis itself. However, on the contrary, there are some physical quantities which have no dimensions but still have units. For eg. Solid angle, angular velocity etc.

Hope this help u