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Question: The heating element of a water heater in an apartment building has a maximum power output of 28 kW.
Four residents of the building take showers at the same time, and each receives heated water at a volume flow rate of 20x10-5 m3/s.
If the water going into the heater has a temperature of 19°C,
Q: What is the maximum possible temperature of the hot water that each showering resident receives?
This one is complex and I don't know how to find the temperature of the hot water?
65kW is to arrive at a town over two 0.100-Ω lines. Estimate how much power is saved if the voltage is stepped up from 120V to 1200V and then down again, rather than simply transmitting at 120V. Assume the transformers are 99% efficient.
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