Question

the net force on a planet is due primarily to the other planets and the sun. by taking into account all the forces acting on a planet, investigators calculated the orbit of each planet. a small discrepancy between the calculated orbit and the observed orbit of the planet uranus was noted. a gravitational force b electromagnetic force

Explanation:

The net force on a planet is mainly due to gravitational forces from other planets and the Sun. The electromagnetic force is not the dominant force in planetary motion.

Answer:

A. gravitational force