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**1. Given the following p-V diagram of an ideal Stirling Cycle, determine the theoretical values of W**

_{12}, Q_{12}, W_{34}and Q_{34}in terms of T_{1}, T_{2}, V_{1}, V_{2}, n (the number of moles) and R (the universal gas constant). Determine the total theoretical p-V work W_{12341}for the full cycle.**2. dU = dQ-Pdv**

**3. I've only just started thermodynamics recently, so my grasp on it is still very weak. I've tried finding W
**

_{12}using W = -∫pdV but I'm not really sure how that gives me theoretical work. I think I'm supposed to end up with some sort of numerical answer for the final part to compare it with an actual p-V work value and find the efficiency of the Stirling Engine.