Answer: [M L -1 T -1 ].
- A [M L<sup>-1</sup> T<sup>-2</sup>]
- B [M L T<sup>-1</sup>]
- C [M L<sup>-1</sup> T<sup>-1</sup>]
- D [M L<sup>-2</sup> T<sup>-1</sup>]
Correct answer: C. [M L<sup>-1</sup> T<sup>-1</sup>]
Explanation: From F = 6πηrv, η = F / (rv) = [M L T<sup>-2</sup>] / ([L][L T<sup>-1</sup>]) = [M L<sup>-1</sup> T<sup>-1</sup>].
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.