ice at 0.0 °C. How much energy (in Joules) must be supplied to the machine to achieve this task? So. Since the machine is a operating in a Carnot cycle, then, its efficiency is e = - | ITHỊ 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

University Physics Volume 2
18th Edition
ISBN:9781938168161
Author:OpenStax
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Chapter4: The Second Law Of Thermodynamics
Section: Chapter Questions
Problem 77AP: A heat engine operates between two temperatures such that the working substance of the engine...
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(4 blanks) 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 °C are converted to
ice at 0.0 °C. How much energy (in Joules) must be supplied to the machine to achieve this task?
So.
Since the machine is a operating in a Carnot cycle, then, its efficiency is
e =
- |
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:(4 blanks) 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 °C are converted to ice at 0.0 °C. How much energy (in Joules) must be supplied to the machine to achieve this task? So. Since the machine is a operating in a Carnot cycle, then, its efficiency is e = - | 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
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