1. 2.2 c)Thermal Capacity By Rishabh Poddar

2. Thermal Capacity  It is the amount of energy needed to heat substances.  It is denoted by a “C”

3. Units  SI unit – Joules per Kelvin (J/k)

4. The Equation The amount of heat energy (q) gained or lost by a substance equals mass of substance (m) times specific heat capacity (C) times change in temperature (ΔT) q = m x C x ΔT

5. Approximate values in J / kg °K of the Specific Heat Capacities of some substances are:  Air 1000  Aluminum 900  Gold 130  Ice 2100  Steel 450  Water 4200  Rubber 1600

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