Multiple Choice
The Early Bird communication satellite hovers over the same point on Earth's equator indefinitely.This is because
A) forces other than Earth's gravity act on it.
B) it pulls as hard on the Earth as the earth pulls on it.
C) it is beyond the main pull of Earth gravity.
D) it is kept aloft by ground control.
E) its orbital period is 24 hours.
Correct Answer:
Verified
Correct Answer:
Verified
Q42: A bullet fired horizontally from a rifle
Q60: Minimal orbital speed about the Earth is
Q61: An airplane that flies at 100 km/h
Q62: Consider a moon that orbits one of
Q63: Rockets that launch satellites into orbit need
Q65: A projectile is fired horizontally in a
Q66: An object is thrown vertically into the
Q67: A gun with a muzzle velocity of
Q68: What prevents satellites such as the space
Q69: Planets would crash into the sun if