Answer to Question #166203 in Physics for gibson mkandawire

Question

1.Clearly explain the meaning of a physical quantity.

2. Briefly explain what is meant by a dimension.

3. From the following physical quantities, which pair has the same dimensions?

(i) moment of couple and work

(ii) force and power

(iii) latent heat and specific heat

(iv) work and power

Answer 1

1. A physical quantity is a physical property of a phenomenon, body, or substance, that can be quantified by measurement.
2. The dimension of a physical quantity is defined as the powers to which the fundamental quantities are raised in order to represent that quantity.
3. (i) moment of couple and work