A Heat Engine Performs the Reversible Cycle Abca with 9

question 39

Multiple Choice

A heat engine performs the reversible cycle abca with 9.0 moles of an ideal gas, as shown in the figure. Path ca is an adiabatic process. The temperatures at points a and b are 300 K and 500 K, respectively. The volume at point c is 0.20 m³. The adiabatic constant of the gas is 1.60. The thermal efficiency of this engine is closest to

• A) 0.070.
• B) 0.10.
• C) 0.13.
• D) 0.16.
• E) 0.19.

---

Definitions:

Mucosa-Associated

Relating to or situated near the mucous membranes, often used in the context of lymphoid tissues that protect mucosal surfaces from pathogens.

Thymus

An organ located in the upper anterior part of the chest cavity, involved in T-lymphocyte (a type of white blood cell) maturation.

Intestines

The lower part of the digestive system, divided into the small and large intestines, that processes nutrients from food and excretes waste.

Maturation

The process of becoming mature, involving growth and development to reach a stable or more advanced state.