Question

Which of the following supports the second law of thermodynamics? a. Heat naturally flows from a low-temperature region to a higher-temperature region. b. All of a heat source can be converted into mechanical energy. c. Energy tends to degrade, becoming of lower and lower quality. d. A heat pump converts heat into mechanical work.

Answer 1

(C) Entropy is always increasing. The order (entropy) of a system tends to decrease over time leading to a more disorganized system. The reverse is not true because order of a closed system does not tend to increase over time.