A rock bed(at 70 C) consists of 6000 kg granite. A house with mass of – McqOptions

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1.	A rock bed(at 70 C) consists of 6000 kg granite. A house with mass of 12000 kg wood and 1000 kg iron is at 15 C. They are brought to a uniform final temperature. Find the irreversibility of the process, assuming an ambient temperature of 15 C.
A.	17191 kJ
B.	18191 kJ
C.	19191 kJ
D.	20191 kJ
Answer» C. 19191 kJ

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