A Student Kept Her 60-Watt, 120-Volt Study Lamp Turned on from 2:00

question 16

Multiple Choice

A student kept her 60-watt, 120-volt study lamp turned on from 2:00 PM until 2:00 AM. How many coulombs of charge went through it?

• A) 150
• B) 3,600
• C) 7,200
• D) 18,000
• E) 21,600

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Definitions:

Sleeping Pills

Sleeping pills are medications or sedative substances taken to aid in falling asleep or to stay asleep.

Decrease REM

refers to a reduction in the duration or intensity of Rapid Eye Movement sleep, a sleep stage associated with vivid dreaming and brain restoration.

Increase REM

Refers to efforts or methods aimed at increasing the duration or frequency of Rapid Eye Movement sleep, a phase associated with vivid dreaming.

Stage 2 Sleep

A period of sleep characterized by specific brain waves (sleep spindles and K-complexes), signifying a deeper sleep than stage 1 and a transitional phase into deeper stages of sleep.