PhysicsLAB AP Free Response Question
2008 B5

 
A 0.03 mol sample of helium is taken through the cycle shown in the diagram above. The temperature of state A is 400 K.
 
 
(a) For each process in this cycle, indicate in the table below whether the quantities W, Q, and DU are positive (+), negative (-), or zero (0). W is the work done on the helium sample.
 

 (b) Explain your response for the signs of the quantities for process .

 (c) Calculate VC





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