When a system is taken from state a to state b in the diagram below along the path acb, 90.0 J of heat go into the system and 60.0 J of work is done by the system. a) How much heat is transferred into the system along path adb if the work done by the system is 15.0 J? b) When the system is returned from b to a along the curved path, the absolute value of the work done by the system is 35.0 J. Does the system absorb or liberate heat? How much heat? c) If U = 0 J and Ua= 8.0 J, find the heat absorbed in the processes ad and db.

When a system is taken from state a to state b in the diagram below along the path acb, 90.0 J of heat go into the system and 60.0 J of work is done by the system. a) How much heat is transferred into the system along path adb if the work done by the system is 15.0 J? b) When the system is returned from b to a along the curved path, the absolute value of the work done by the system is 35.0 J. Does the system absorb or liberate heat? How much heat? c) If U = 0 J and Ua= 8.0 J, find the heat absorbed in the processes ad and db.

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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Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

When a system is taken from state a to state b in the diagram below along the
path acb, 90.0 J of heat go into the system and 60.0 J of work is done by the
system.
a) How much heat is transferred into the system along path adb if the work done
by the system is 15.0 J?
b) When the system is returned from b to a along the curved path, the absolute
value of the work done by the system is 35.0 J. Does the system absorb or
liberate heat? How much heat?
c) If U. = 0 J and Ua= 8.0 J, find the heat absorbed in the processes ad and db.
a

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