A-LevelPhysicsPhysical quantities and units9702/12 · Feb/Mar 2019 · Q21 Mark
At temperatures close to 0 K, the specific heat capacity c of a particular solid is given by c = bT³, where T is the temperature and b is a constant, characteristic of the solid. The SI unit of specific heat capacity is J kg⁻¹ K⁻¹. What is the unit of constant b, expressed in SI base units?
Am² s⁻² K⁻³
Bm² s⁻² K⁻⁴
Ckg m² s⁻² K⁻³
Dkg m² s⁻² K⁻⁴
✓ Correct answer
B: m² s⁻² K⁻⁴
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