Answer: strain.
- A strain
- B force
- C pressure
- D density
Correct answer: A. strain
Explanation: Strain is a ratio of two lengths, so it has no 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.