Fig. 5.1 shows an aluminium block that has just come out of a furnace in a factory. The labels shown are: furnace, aluminium block, solid metal rollers, factory worker.
(a)[3]
Calculate the thermal energy gained by the block while it is in the furnace.
(b)[3]
State and explain the main process through which thermal energy is transferred to the worker.
(c)[3]
State and explain the main process by which thermal energy is transferred from the outer surface of the solid metal rollers into their interior.
Worked solution & mark scheme
This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Energy = 4.1 \times 10^8 J or 410 MJ” …