Q1 (a) A frictionless piston-cylinder device contains water and the water is heated in a constant pressure process by an electrical heater. The water is also heated by an external heat source as shown in Figure Qla. Water Electrical Heat heater Figure Qla i) Write the equation for boundary work for the above process. ii) Will the boundary work in this process be positive, negative or zero? Explain your answer. iii) If no heat is supplied to the system, and the electrical heater is turned off, will the volume increase, decrease or remain the same when thermal equilibrium is achieved? Explain your answer.

Q1 (a) A frictionless piston-cylinder device contains water and the water is heated in a constant pressure process by an electrical heater. The water is also heated by an external heat source as shown in Figure Qla. Water Electrical Heat heater Figure Qla i) Write the equation for boundary work for the above process. ii) Will the boundary work in this process be positive, negative or zero? Explain your answer. iii) If no heat is supplied to the system, and the electrical heater is turned off, will the volume increase, decrease or remain the same when thermal equilibrium is achieved? Explain your answer.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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