Physics (AS & A Level) · May / June 2026 · Paper 14 · Question 4

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?

1. Am² s⁻² K⁻³
2. Bm² s⁻² K⁻⁴
3. Ckg m² s⁻² K⁻³
4. Dkg m² s⁻² K⁻⁴

As printed in the paper