During Each Cycle of Its Operation, a Certain Heat Engine

question 73

Multiple Choice

During each cycle of its operation, a certain heat engine does 40 joules of work while exhausting 160 joules of thermal energy to the environment. The energy efficiency of this heat engine is

• A) 80%.
• B) 75%.
• C) 25%.
• D) 20%.
• E) None of the above.

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Definitions:

Chronic Stress

is a condition of continued and persistent stress over an extended period, which can have detrimental effects on one's health and well-being.

Psychoneuroimmunologists

Scientists who study the interactions between the nervous system, psychology, and the immune system, particularly how stress and behavior impact health.

Immune System

A complex network of cells, tissues, and organs that work together to defend the body against attacks by foreign invaders, such as bacteria, viruses, and parasites.

General Adaptation Syndrome

A model that describes the body's short-term and long-term reactions to stress, comprising stages of alarm, resistance, and exhaustion.