8. Two spherical objects have masses of 1.2 X 10^2 kg and 3.2 X 10^9 kg. Their centers are separated by a distance of 15 m. Find the gravitational
attraction between them. The answer needs to be in proper scientific
notation form. *

Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.