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On a typical mission, the Space Shuttle (m = 2.00 106 kg) orbits at an altitude of 250 km above the Earth's surface. (Astronomical data needed for this problem can be found on the inside back cover of the text.)
(a) Find the speed of the shuttle in its orbit.
km/s
(b) How long does it take for the shuttle to complete one orbit of the Earth?
hr
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