Answered: If the work done on a closed system is…

If the work done on a closed system is 20 kJ/kg. and 40 kJ/kg heat is rejected from the system, its internal energy decreases by (a) 20 kJkg (c) -20 kkg (b) 60 kJkg (d) -60 kJ/kg

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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Question

Solve fast please...

If the work done on a closed system is 20 kJ/kg.
and 40 kJ/kg heat is rejected from the system,
its internal energy decreases by
(a) 20 kJ/kg
(c) -20 kkg
(b) 60 kJkg
(d) -60 kJ/kg

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