The mean orbital speed of Mars is 0.80 times that of the Earth in their orbits around the Sun. Because the mean orbital radius of Mars is 1.52 times that of the Earth, and the mass of Mars is 0.11 times that of the Earth, the ratio of the angular momentum of Mars to that of the Earth in their orbits around the Sun is
A) 99.
B) 26.
C) 0.26.
D) 0.21.
E) 0.13.

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The Answer of The mean orbital speed of Mars is 0.80 times that of the Earth in their orbits around the Sun. Because the mean orbital radius of Mars is 1.52 times that of the Earth, and the mass of Mars is 0.11 times that of the Earth, the ratio of the angular momentum of Mars to that of the Earth in their orbits around the Sun is
A) 99.
B) 26.
C) 0.26.
D) 0.21.
E) 0.13.

The Mean Orbital Speed of Mars Is 0