O-LevelPhysicsThermal Physics5054/11 · Oct/Nov 2015 · Q171 Mark

An electric shower takes in cold water at 17 °C. The shower gives 6000 J of energy every second to the cold water and heats it to 37 °C. The specific heat capacity of water is 4200 J/(kg °C). What is the mass of hot water supplied by the shower in one second?

A0.035 kg

B0.039 kg

C0.071 kg

D0.084 kg

✓ Correct answer

C: 0.071 kg

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Topic: Thermal Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2015 Paper 1 Variant 1, question 17.

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