Engineering Board Exam Reviewer · Thermodynamics · medium
Water flows at 0.1 L/s through a shower heater and its temperature rises by 15 °C. Assuming all electrical energy goes into the water, what is the heater power? (c = 4.187 kJ/kg· K)
- 0.419 kW
- 62.805 kW
- 6.281 kW
- 1.500 kW
Answer
C. 6.281 kW
Solution
m = 0.1 kg/s. P = mc T = 0.1(4.187)(15) = 6.281 kW.
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