Answer: dimensions.
- A dimensions
- B magnitude
- C units of mass
- D algebraic sign
Correct answer: A. dimensions
Explanation: For an equation to be valid, all its terms must have identical dimensions.
The 7 SI base units. All derived units (newton, joule, watt, volt, etc.) can be expressed as combinations of these 7 fundamental units raised to various powers.
Concept context
SI base units, dimensional analysis, significant figures, and error propagation. The toolkit every physics calculation relies on.