An Ideal Frictionless Engine Absorbs Heat at 400 K and Exhausts

question 1

Multiple Choice

An ideal frictionless engine absorbs heat at 400 K and exhausts heat at 300 K.Its efficiency is

• A)25%.
• B)33%.
• C)75%.
• D)133%.

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Definitions:

REM Sleep

A phase of sleep characterized by rapid eye movements, more dreaming and bodily movement, and faster pulse and breathing.

Conscious

Awareness of one's own existence, sensations, thoughts, and surroundings.

Problem-focused

A coping mechanism that aims to address the root cause of a stressor or problem directly, rather than dealing with its symptoms.

Dream Theory

A collection of hypotheses that attempt to explain why we dream and what functions those dreams may serve.