Positive point charges g = +8.00 mC and q’ = +3.00 mC are moving relative to an observer at point P, as shown in figure. The distance d is 0.120 m. When the two charges are at the locations shown in the figure, what are the magnitude and direction of the net magnetic field they produce at point P?(Take v = 4.50 x106 ms-1 and v’=9.00 x 06 ms-1)