In the shown figure, calculate the total work done on the gas when it is transformed from state a to state c, along the path indicated?
Correct answer: C. 4500 J
- A. 1500 J
- B. 3000 J
- C. 4500 J
- D. 5000 J
- E. 9, 500 J
Explanation
The thermodynamic work done is W = PdVAs dV = 0 for path b to c it will not contribute any work.The work done will come from path a to b and the required work done,W = ( 3 x 105) x (25 - 10) 10-3 = 4500 J
This question appeared on the UHS MDCAT 2017 paper, which you can sit online with every answer explained.
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About Work
Work is done when a force produces displacement, with its value determined by the component of force along the displacement. The topic covers positive, negative and zero work, work by variable forces from force-displacement graphs, and the connection between net work and change in kinetic energy.
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