n ice-making mạchine operates in a Carnot cycle. It takes heat from water at 0.0 °C and rejects heat to a room at 24.0 °C. Suppose that 85.0 kg of water at 0.0 °C are converted to ice at 0.0 °C. How much

University Physics Volume 2
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ISBN:9781938168161
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Chapter3: The First Law Of Thermodynamics
Section: Chapter Questions
Problem 66P: One of a dilute diatomic gas occupying a volume of 10.00 L expands against a constant pressure of...
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energy (in Joules) must be supplied to the machine to achieve this task?
Sol.
Since the machine is a operating in a Carnot cycle, then, its efficiency is
e = QH
-| QC
TH|
By virtue of first law, the work done to convert water to ice is given by
W = Q =
Thus, the total energy needed to convert 85 kg of water is
ET =
687.5 J
Transcribed Image Text:energy (in Joules) must be supplied to the machine to achieve this task? Sol. Since the machine is a operating in a Carnot cycle, then, its efficiency is e = QH -| QC TH| By virtue of first law, the work done to convert water to ice is given by W = Q = Thus, the total energy needed to convert 85 kg of water is ET = 687.5 J
An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0 °C and rejects heat to a room at 24.0 °C. Suppose that 85.0 kg of water at 0.0 0C are converted to ice at 0.0 °C. How much
Transcribed Image Text:An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0 °C and rejects heat to a room at 24.0 °C. Suppose that 85.0 kg of water at 0.0 0C are converted to ice at 0.0 °C. How much
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