Multiple Choice
Spaceman Speff orbits planet X with his spaceship.To remain in orbit at 421 km from the planet's center,he should maintain a speed of 80 m/s.What is the mass of planet X?
A) 4.0 × 1019 kg
B) 5.1 × 1017 kg
C) 4.0 × 1016 kg
D) 5.1 × 1014 kg
Correct Answer:
Verified
Correct Answer:
Verified
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