Answer: [ML²T⁻²].
- A [ML⁵T⁻²]
- B [ML⁻¹T⁻²]
- C [ML²T⁻²]
- D [L³]
Correct answer: C. [ML²T⁻²]
Explanation: a has dimensions of pressure×volume² = [ML⁵T⁻²] and b is a volume [L³], so a/b = [ML²T⁻²], i.e. energy.
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.