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?