Author Question: Two satellites are monitored as they orbit the Earth; satellite X is four times as far from the ... (Read 126 times)

Tirant22 · **on:** Jul 28, 2018

Two satellites are monitored as they orbit the Earth; satellite X is four times as far from the Earth's center as is satellite Y. From Kepler's third law one may conclude that the period of revolution of X is what factor times that of Y?
a. 1/2
c. 8.0
b. 2.0
d. 22.6

Question 2

An asteroid has a perihelion (the orbit's closest approach to the Sun) of 2.5 AU and a period of revolution of 8.0 y. What is its greatest distance from the Sun (its aphelion)? (Hint: For an elliptical orbit, the effective radius of the orbit is half the sum of the nearest distance to the Sun and the greatest distance from the Sun.)
a. 8.0 AU
c. 5.5 AU
b. 6.5 AU
d. 2.5 AU