O-LevelPhysicsThermal Physics5054/12 · Oct/Nov 2021 · Q181 Mark
Solar panels are used to heat water with a mass of 500 kg. The total area of the solar panels is 10 m² and the average power output from each square metre of the panels is 300 W. The specific heat capacity of water is 4200 J/(kg°C). What is the increase in the water temperature after 8.0 hours? (Assume there is no heat loss.)
A0.69°C
B4.1°C
C5.1°C
D41°C
✓ Correct answer
D: 41°C
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