A Carnot Engine Operates with a Cold Reservoir at a Temperature

question 45

Multiple Choice

A Carnot engine operates with a cold reservoir at a temperature of T_L = 400 K and a hot reservoir at a temperature of T_H = 500 K.What is the net entropy change as it goes through a complete cycle?

• A)0 J/K
• B)20 J/K
• C)80 J/K
• D)400 J/K
• E)500 J/K

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Definitions:

Parasite

An organism that lives on or in a host organism and gets its food at the expense of its host, often causing harm.

Mass Extinction

A relatively rapid and widespread decrease in the biodiversity on Earth, marked by the significant loss of species in a short period of geological time.

Adaptive Radiation

The process by which organisms diversify rapidly into a multitude of new forms, particularly when a change in the environment makes new resources available or opens new environmental niches.

Variation

The occurrence of differences among individuals within a population or species, resulting from genetic differences, environmental factors, or a combination of both.