Heat Capacity - Heat & Thermodynamics Step by Step

Heat capacity says how many joules are needed for each kelvin of temperature change.

highlighted = computed this step

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A heat capacity of 10 joules per kelvin means each kelvin of warming needs 10 joules.

C = 10\ \text{J/K}

For a 3 kelvin change, use 3 copies of that energy.

Q = C\Delta T

The transferred heat is 10 times 3, or 30 joules.

Q = 10\ \text{J/K}\cdot 3\ \text{K} = 30\ \text{J}