Which of the following statements about geostationary satellites is correct______
A. Its acceleration must be less than 9.8m/s 2
B. Its speed is less than 7.9km/s
C. Its period is one day and the orbital plane coincides with the equatorial plane
D. All of these
Answer:D
Which of the following statements about geostationary satellites is correct______
A. Its acceleration must be less than 9.8m/s 2 B. Its speed is less than 7.9km/s C. Its period is one day and the orbital plane coincides with the equatorial plane D. All of these