Cyclic Thermodynamic Processes
22. The First Law of Thermodynamics / Cyclic Thermodynamic Processes / Problem 4
A thermal engine uses helium as the working fluid. At point A, helium is initially at a temperature of 300 K while the temperature at point C is 750 K. The pV diagram of the thermal engine's cyclic transformation is shown below. Calculate the heat Q during the transformation AB. Hint: Calculate W and ΔEint first.
![pV diagram of a thermal engine showing points A, B, and C for cyclic processes.](https://lightcat-files.s3.amazonaws.com/problem_images/396c323f003ff90d-1681391163914.jpg)
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