Give an equation for the infinitesimal change in entropy, ??, of a system in terms of the heat transfer ??? and the temperature ? at which the heat transfer occurs. Explain the sign convention.ii. A litre of water at 20 °C is placed in a fridge at 5 °C. Calculate the change in entropy of the water, including the sign, once all the water has come into thermal equilibrium.iii. Calculate the change in entropy of the fridge from part ii, including the sign.iv. Demonstrate that the Second Law has been obeyed in the process described in ii and iii.
Give an equation for the infinitesimal change in entropy, ??, of a system in terms of the heat transfer ??? and the temperature ? at which the heat transfer occurs. Explain the sign convention.ii. A litre of water at 20 °C is placed in a fridge at 5 °C. Calculate the change in entropy of the water, including the sign, once all the water has come into thermal equilibrium.iii. Calculate the change in entropy of the fridge from part ii, including the sign.iv. Demonstrate that the Second Law has been obeyed in the process described in ii and iii.
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter15: Thermodynamics
Section: Chapter Questions
Problem 52PE: (a) In reaching equilibrium, how much heat transfer occurs from 1.00 kg of water at 40.0C when it is...
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Give an equation for the infinitesimal change in entropy, ??, of a system in terms of the
ii. A litre of water at 20 °C is placed in a fridge at 5 °C. Calculate the change in entropy of the water, including the sign, once all the water has come into thermal equilibrium.
iii. Calculate the change in entropy of the fridge from part ii, including the sign.
iv. Demonstrate that the Second Law has been obeyed in the process described in ii and iii.
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