Which of the following situations violates the second law of
thermodynamics?
o
a. a heat pump absorbs 100 j of heat from a cool reservoir and
releases 80 j of heat to a hot reservoir.
o
b. a heat pump absorbs 100 j of heat from a cool reservoir and
releases 120 j of heat to a hot reservoir.
o
c. a heat engine absorbs 100 j of heat from a hot reservoir and
releases 70 j of heat to a cool reservoir.
o
d. a heat engine absorbs 100 j of heat from a hot reservoir and
releases 20 j of heat to a cool reservoir.