Two Moons Orbit a Planet in Nearly Circular Orbits

question 26

Multiple Choice

Two moons orbit a planet in nearly circular orbits.Moon A has orbital radius r,and moon B has orbital radius 4r.Moon A takes 20 days to complete one orbit.How long does it take moon B to complete an orbit?

• A) 20 d
• B) 40 d
• C) 80 d
• D) 160 d
• E) 320 d

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Definitions:

Letter Reversals

A common phenomenon in early childhood learning where letters are written backward or upside down.

Knowledge Base

An individual’s mentally stored information. Adults generally have a larger base for most domains of knowledge than children do.

Cognitive Changes

Refers to alterations in mental processes such as perception, memory, and reasoning that occur over time due to aging, development, or neurological conditions.

Processing Speed

The rate at which an individual can perceive, understand, and respond to information or stimuli.