Question

Please can someone help with these questions

5. Does internal energy depend on path, in other words how a system got to the state its in? 6. How does the First Law apply to weight gain? 7. What is an irreversible process? 8. Define heat engine 9. Sketch Fig. 15.7 10. Given a plot of pressure vs. volume for a thermodynamic process, how do you find the work done? 2 . (T/F For a thermodynamic process, work and heat are independent of path. 12. Define isobaric, isochoric, isothermal, and adiabatic 13. If you have a closed loop on a PV diagram, the work done is: 14. Define reversible process 15. State the Second Law of Thermodynamics, both the first and second versions 16. Give an everyday example of the Second Law of Thermodynamics 17. What is AU for a cyclical process? 18. For a refrigerator, where is the hot reservoir and where is the cold reservoir? 9. For a heat pump, where is the hot reservoir and where is the cold reservoir? 20. An inventor claims that they have created an engine that is more efficient than a Camot engine operating between the same two temperatures. Why are they lying?

Answer 1

5) No, internal energy does not depend on path. It is path independent. It is a function only of the state of the system.