Define what is meant by specific latent heat.
An electrical heater is placed in some melting ice that is held in a funnel, as shown in Fig. 3.1. The heater is switched on and, when the ice is melting at a constant rate, the mass $m$ of ice melted in $5.0$ minutes is measured, together with the heater power $P$. The power $P$ is then increased. A fresh reading for the mass $m$ of ice melted in $5.0$ minutes is taken when the ice is again melting at a constant rate. The data for the power $P$ and the mass $m$ are shown in Fig. 3.2.
Complete Fig. 3.2 to determine the mass melted per second for each heater power.
Use the data in the completed Fig. 3.2 to find a value for the specific latent heat of fusion $L$ of ice.
Use the data in the completed Fig. 3.2 to determine the rate $h$ at which the ice gains thermal energy from the surroundings.