An engineer is testing a superalloy turbine blade of mass 0.48 kg during a manufacturing process. The blade is heated to an initial temperature of 220∘C220 ^\circ\text{C}220∘C and then quenched in an oil bath. The temperature of the blade drops to 40∘C40 ^\circ\text{C}40∘C in a time of 1.5 minutes1.5 \text{ minutes}1.5 minutes.
The specific heat capacity of the superalloy is 460 J kg-1 K-1.
What is the average thermal power transferred away from the turbine blade during this cooling process?
98 W98 \text{ W}98 W
440 W440 \text{ W}440 W
640 W640 \text{ W}640 W
26 kW26 \text{ kW}26 kW
