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Home Q & A Board Science-Related Homework Help Physics
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mikael mikael
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9 years ago

 
Spaceman Speff orbits planet X with his spaceship. To remain in orbit at 556 km from the planet's center, he should maintain a speed of 85 m/s. What is the mass of planet X? 
A)
 
6.0 × 1019 kg 
B)
 
7.1 × 1017 kg 
C)
 
6.0 × 1016 kg 
D)
 
7.1 × 1014 kg 
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bio_manbio_man
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9 years ago
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mikael Author
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9 years ago
Thanks for the help
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