Units, Dimensions, and Scalar Quantities in Physics

Units and dimensions both refer to the measurement scale

Dimensions refer to the measurement scale, while units refer to the physical quantity being measured

Units refer to the measurement scale, while dimensions refer to the physical quantity being measured (correct)

Units and dimensions are interchangeable terms

A quantity that represents a physical dimension

A quantity that is fully described by its direction and has no magnitude

A quantity that has both magnitude and direction

A quantity that is fully described by its magnitude and has no direction (correct)

Examining the relationships between different physical quantities by analyzing their dimensions (correct)

Studying the dimensions of fundamental particles

Analyzing the units of measurement for a given quantity

Finding the dimensions of an object in space