Answer: 3.1.
- A 3.1
- B 3.13
- C 3.125
- D 3.0
Correct answer: A. 3.1
Explanation: The raw product is 3.125. In multiplication the result keeps the fewest significant figures of the factors; 2.5 has 2, so the answer is 3.1.
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.