The Moon orbits the Earth the Earth orbits the Sun. If the Earth-moon system is ˜1 AU from the Sun and takes ˜1 Earth year to orbit, what is the combined mass of the triple system Express your answer in solar mass units.
A)1
B)1.1
C)1.2
D)1.3

Question

Quizplus · Accepted Answer

The mass of the Earth-moon system is negligible compared to the mass of the Sun, so the combined mass of the triple system is essentially the mass of the Sun, which is 1 solar mass.

The Moon Orbits the Earth the Earth Orbits the Sun