Physics

Problem

![](https://storage.googleapis.com/diraq-contents/question-bank/question-images/e3fa5b4920e0/2025_11_20_5d1425108ae7999fb5dag-15.jpg) 2008B5. 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 `

\Delta U

` are positive `(+)`, negative ( - ), or zero ( 0 ). W is the work done on the helium sample.

Process	` $W$ `	` $Q$ `	` $\Delta U$ `
` $A \rightarrow B$ `
` $B \rightarrow C$ `
` $C \rightarrow A$ `

b. Explain your response for the signs of the quantities for process `

\mathrm{A} \Rightarrow \mathrm{B}

`. c. Calculate `

V_{c}

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