A System Delivers 1275 J of Heat While the Surroundings

question 34

Multiple Choice

A system delivers 1275 J of heat while the surroundings perform 854 J of work on it. What is ΔU of the system?

• A) -2129 J
• B) -421 J
• C) +421 J
• D) +2129 J
• E) -1275 J

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Definitions:

Cerebrum

The largest part of the brain responsible for higher brain functions, including thought, action, emotion, and reasoning.

Higher Mental Activity

Complex cognitive processes such as thinking, reasoning, problem-solving, and planning, which distinguish higher animals and humans.

Limbic System

A sophisticated arrangement of nerve systems and connections in the brain, situated around the cortex's perimeter, responsible for basic instincts and emotional states. This system regulates core feelings including pleasure, fear, and rage, as well as basic urges related to eating, sexual activities, asserting dominance, and nurturing offspring.

Corpus Callosum

A large bundle of nerve fibers that connects the left and right hemispheres of the brain, facilitating interhemispheric communication.