5. Thermal and Statistical Physics
Thermodynamics — Quiz
Test your understanding of thermodynamics with 5 practice questions.
Practice Questions
Question 1
Which thermodynamic potential is most useful for processes occurring at constant temperature and pressure?
Question 2
A reversible heat engine operates with an efficiency of $40\%$ between two reservoirs. If the cold reservoir is at $300\ \text{K}$, what is the temperature of the hot reservoir?
Question 3
Which of the following statements correctly describes the relationship between the Helmholtz free energy ($A$) and the internal energy ($U$)?
Question 4
In a material processing application, a substance undergoes a phase transition at constant temperature and pressure. Which thermodynamic potential's change is zero at equilibrium for this process?
Question 5
A system performs $50\ \text{J}$ of work on its surroundings and its internal energy decreases by $70\ \text{J}$. How much heat was exchanged with the surroundings, and in what direction?