Essay
The International Space Station is orbiting at an altitude of about 370 km above the earth's surface.The mass of the earth is 5.97 × 1024 kg,the radius of the earth is 6.38 × 106 m,and
G = 6.67 × 10-11 N ∙ m2/kg2.Assuming a circular orbit,
(a)what is the period of the International Space Station's orbit?
(b)what is the speed of the International Space Station in its orbit?
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