Answer: 4.
- A 4
- B 23
- C 3
- D 26
Correct answer: A. 4
Explanation: Only the digits 6, 0, 2 and 3 in the mantissa count - four significant figures.
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.