Carnot cycle problem - Is it thermodynamically possible to do 500J of work?

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SUMMARY

The discussion centers on the Carnot cycle and the thermodynamic feasibility of performing 500J of work. It is established that to achieve this, 600J of heat must be exhausted to the cold reservoir while converting 400J into work. The equation q1/T_hot + q3/T_cold = 0 is utilized, with q3 set at 600J when T_cold is 300K. The conversation emphasizes the necessity of applying the second law of thermodynamics, indicating that net entropy must either increase or remain constant.

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cmkc109
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Homework Statement


250uhqe.png


2. The attempt at a solution

Is it only possible when 600J of heat is exhausted and 400J of heat is converted into work? Is the 600J heat will enter the cold reservoir and available to do work again?

q1/T hot + q3 / T cold = 0
q3 = 600 when T = 300K

 
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Thanks for the post! Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
 
cmkc109 said:

Homework Statement


250uhqe.png

q1/T hot + q3 / T cold = 0

Good.

q3 = 600 when T = 300K

where did this come from?

Use your previous equation but make it an inequality, not an equation, reflecting the fact that net entropy can only increase or stay at zero.
You are given q1, q3, Thot and Tcold.
 

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