If Earth Had a Pair of Identical Moons on Opposite

question 35

Multiple Choice

If Earth had a pair of identical moons on opposite sides of the same circular orbit, the center of gravity of the double-moon-Earth system would be

• A)inside the Earth, but off center.
• B)at the center of the Earth.
• C)outside the Earth, but within the orbital path of the moons.
• D)outside the Earth, but beyond the orbital path of the moons.

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Definitions:

N3 Sleep

The third stage of non-REM sleep, characterized by deep sleep and the presence of delta waves in brain activity, crucial for restorative sleep.

Insomnia

A sleep disorder characterized by difficulty falling asleep, staying asleep, or getting quality sleep, leading to daytime impairment.

Sleeping Pills

Medications specifically designed to promote or extend sleep, often used to treat various sleep disorders.

Sleep Disorder

A medical disorder of the sleep patterns of a person or animal; some sleep disorders are serious enough to interfere with normal physical, mental, and emotional functioning.