Which of the following properties can be inferred from the star\'s orbital perio

Question

Which of the following properties can be inferred from the star's orbital period? the planet's orbital radius the planet's mass both the planet's orbital radius and its mass neither the planet's orbital radius nor its mass Part B Is it possible to determine the planet's mass from the star's velocity curve? yes, by measuring both the star's orbital period and its change in velocity over the orbit yes, by measuring the star's orbital period only yes, by measuring only the change in the star's orbital velocity over the orbit no, because the star's spectrum cannot tell us about the planet PartC Consider the planet that causes the stellar motion shown in Plot 2 {be sure you have clicked the "Plot 2" button in the lower window of the animation). What can be said about a different planet orbiting the same star with an orbital period of 500 days? The planet must be more massive. The planet must be farther from the star. The planet must be less massive. The planet must be closer to the star.

Explanation / Answer

Part A) option A) planets orbital radius

Reason: star's orbital period helps in finding the planet's orbital radius from the help of Kepler's laws

part B) option A)yes, by measuring both the star's orbital period and its change in velocity over the orbit

Reason : this can be inferred from the Kepler's orbits and also galaxy rotation curve

part c) answer)

option d) planet must be closer to star

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