Eclipse of the sun occurs(A).When the moon is between the sun and the earth.(B). When the earth is between the moon and the sun.(C).When the sun and the earth are
parallel to each other.(D).When the moon is directly above the earth.(E).All the above
are correct

Determine the time it takes for a satellite to orbit the earth in a circular "near-earth" orbit. the definition of "near-earth" orbit is one which is at a height above the surface of the earth which is small compared to the radius of the earth, so that you may take the acceleration due to gravity as essentially the same as that on the surface. does your result depend on the mass of the satellite?