Question

1
Is it possible a physical quantity be dimensionless and unitless?​

Answer 1

Explanation:

what no it is not possible for a physical quantity to be dimensionless and unitless

it may be senseless though

Answer 2

Answer:

Certain quantities are defined as the ratio of two quantities of the same kind, and are thus dimensionless. A dimensionless physical quantity may have an unit (e.g. Mechanical equivalent of heat) but a unitless physical quantity is always dimensionless (e.g. Coefficient of friction, refractive index).

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