Answer: 114 In exercises that require numerical values, use Table12.7.1 and the
Chapter 12, Problem 12(choose chapter or problem)
114 In exercises that require numerical values, use Table12.7.1 and the following values, where needed:radius of Earth = 4000 mi = 6440 kmradius of Moon = 1080 mi = 1740 km1 year (Earth year) = 365 days (a) Vanguard 1 was launched in March 1958 with perigeeand apogee altitudes above the Earth of 649 km and4340 km, respectively. Find the length of the semimajoraxis of its orbit.(b) Use the result in part (a) of Exercise 16 in Section 10.6to find the eccentricity of its orbit.(c) Find the period of Vanguard 1 in minutes.
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