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Physics, 30.11.2019 03:31 destineecoleman2001

It is proposed to have a water heater that consists of an insulated pipe of 5-cm diameter and an electric resistor inside. cold water at 20°c enters the heating section steadily at a rate of 30 l/min. if water is to be heated to 55°c, determine (a) the power rating of the resistance heater (b) the average velocity of the water in the pipe.

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