A satellite circles the moon at a distance above its surface equal to 2 times the radius of the moon. What is the acceleration due to gravity of the satellite, as compared to the acceleration due to gravity on the surface of the moon

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

i believe the answer is a