A-LevelPhysicsPhysical quantities and units9702/12 · May/June 2015 · Q21 Mark

The average kinetic energy E of a gas molecule is given by the equation E = k T where T is the absolute (kelvin) temperature. What are the SI base units of k?

Akg⁻¹ m⁻¹ s² K

Bkg⁻¹ m⁻² s² K

Ckg m s⁻² K⁻¹

Dkg m² s⁻² K⁻¹

✓ Correct answer

D: kg m² s⁻² K⁻¹

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Topic: Physical quantities and units, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2015 Paper 1 Variant 2, question 2.

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