A Certain Heat Engine Extracts 1

question 78

Multiple Choice

A certain heat engine extracts 1.30 kJ of heat from a hot temperature reservoir and discharges 0.70 kJ of heat to a cold temperature reservoir.What is the efficiency of this engine?

• A)46%
• B)54%
• C)86%
• D)27%
• E)13%

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Definitions:

Positive Feelings

Emotions and feelings that are pleasant or beneficial in nature, such as happiness, joy, and contentment.

Prefrontal Cortex

The part of the frontal lobes of the brain involved in decision making, problem-solving, control of purposeful behaviors, consciousness, and emotions.

Amygdala

A part of the brain involved in experiencing emotions, particularly fear and pleasure.

Type A Personality

A temperament characterized by high levels of competitiveness, self-imposed stress, and a constant sense of urgency.