1033
AVMultiple Choice

Prescriptive Test

Question 1033 • FL-2106310-United States Government

Rosalinda wants to calculate the mass of Earth using Kepler’s laws or Newton’s universal law of gravitation.Which data would allow her to find the mass of Earth?

Answer
A
the mass of the Sun and the orbital period of the moon
B
the moon’s orbital period and distance from Earth
C
Earth’s distance from the Sun and the moon’s orbital period
D
Earth’s orbital period and distance from the Sun

Explanation

The Moon’s orbit around Earth can be used to determine Earth’s mass. For a nearly circular orbit, the relationship is M = 4π²r³/(GT²), where r is the Moon’s distance from Earth and T is its orbital period. Choice B provides both values; the Sun’s mass or Earth’s orbit around the Sun is not needed.

AI-written and checked against the verified answer.

Previous
Next