3) A water heater tank in a house is set to maintain water temperature at 120...

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3) A water heater tank in a house is set to maintain water temperature at 120 F. The tank does not hold the temperature exactly constant at 120 F, rather it maintains the temperature between (for example) 115 F and 125 F. It does this by turning on heaters when the water temperature is 115 F to raise the water temperature to 125 F and then turning the heaters off to allow the temperature to drop to 115 F. Assume that the tank pressure is held constant at 30 psia and the tank holds 60 gallons of water. a. How much heat is transferred into the water while it is heating up? (J) b. How much specific heat is transferred into the water while it is heating up? (J/kg) C. How much heat does the water lose while it cools? (J) d. How much specific heat does the water lose while it cools? (J/kg) 3) A water heater tank in a house is set to maintain water temperature at 120 F. The tank does not hold the temperature exactly constant at 120 F, rather it maintains the temperature between (for example) 115 F and 125 F. It does this by turning on heaters when the water temperature is 115 F to raise the water temperature to 125 F and then turning the heaters off to allow the temperature to drop to 115 F. Assume that the tank pressure is held constant at 30 psia and the tank holds 60 gallons of water. a. How much heat is transferred into the water while it is heating up? (J) b. How much specific heat is transferred into the water while it is heating up? (J/kg) C. How much heat does the water lose while it cools? (J) d. How much specific heat does the water lose while it cools? (J/kg)

Answer rating: 100% (QA)

To calculate the heat transferred into the water while it is heating up we can use the equation Q m c T where Q is the heat transferred m is the mass ... View the full answer