Physics · Oct / Nov 2016 · Paper 12 · Question 22

The thermal energy produced by an electric heater in three minutes is used to melt wax. The wax is initially at its melting point of 60 °C. The specific latent heat of the wax is 220 J / g. The heater supplies 7700 J of thermal energy to the wax. How much wax melts?

1. A0.58 g
2. B1.7 g
3. C12 g
4. D35 g

As printed in the paper