What affects the average orbital speed of a star in our galaxy?
A) The mass of the galaxy inside its orbit and size of its orbit
B) The mass and age of the star
C) The star's mass and the mass of the galaxy
D) The mass and age of the galaxy

Question

Quizplus · Accepted Answer

The average orbital speed of a star in our galaxy is influenced by the mass of the galaxy inside its orbit and the size of its orbit. This is because the gravitational force between the star and the galaxy determines the speed and trajectory of the star's orbit. The mass and age of the star do not have a significant impact on its orbital speed, and the mass of the galaxy is already accounted for in choice A.

What Affects the Average Orbital Speed of a Star in Our