IB skill practice

Calculate thermal energy transfers

Paper 1, Paper 2 5 marks Difficulty 3

Thermal energy from temperature change

Water of mass \(0.5\,\text{kg}\) in a insulated cup practical warms by \(9\,\text{K}\). Use \(c=4200\,\text{J kg}^{-1}\text{K}^{-1}\). Calculate the thermal energy transferred. Enter the numerical result and choose the interpretation that matches the physics meaning.

Worked practice: physics data and result

Read the physical quantities first, then calculate the result and state what it means.