A 100 W Lightbulb Has an Energy Efficiency of 5

question 67

Multiple Choice

A 100 W lightbulb has an energy efficiency of 5%. It is turned on for one minute. During this time, the visible radiant energy output of the lightbulb is

• A) 6000 J.
• B) 300 J.
• C) 5700 J.
• D) impossible to determine because we don't know the voltage.
• E) impossible to determine because we don't know the power.

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Definitions:

Incubation

The process of keeping something under controlled conditions to develop or grow, often used in the context of eggs or infectious diseases.

False Mental Sets

Fixed, inappropriate ways of thinking that hinder problem-solving because they block the ability to see alternative solutions or approaches.

Frontal Lobes

The frontal lobes are regions of the brain crucial for cognitive functions, decision making, and controlling voluntary muscle movements.

Limbic System

A group of interconnected structures (including the hypothalamus, the amygdala, and others) that are crucial for emotion, motivation, and many aspects of learning and memory.