The moons of Mars, Phobos (Fear) and Deimos (Terror), are very close to the planet compared to

Earth? s Moon. Their orbital radii are 9,378 km and 23,459 km respectively. What is the ratio of the

orbital speed, v, of Phobos to that of Deimos?

A) 1.582 B) 3.956 C) 0.3998 D) 0.2528 E) 2.858

Question

27 September, 10:56

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Answers (1)

Know the Answer?

Gunner Chang · Answer 1

Answer:D - 0.2528

Explanation:

T = (Rp/Rd) ^3/2

T = (9378/23459) ^3/2

T=0.2528

The answer is D

The moons of Mars, Phobos (Fear) and Deimos (Terror), are very close to the planet compared toEarth? s Moon. Their orbital radii are 9,378 km and 23,459 km respectively. What is the ratio of theorbital speed, v, of Phobos to that of Deimos?A) 1.582 B) 3.956 C) 0.3998 D) 0.2528 E) 2.858