7. (30 points) Using the picture in Figure 1. we will calculate the total voltage at the origin, assuming q1 = 10nC and q2 = -30nC. a) (5 points) Calculate the votlage at the origin due to q1.\fc) (5 points) Calculate the total voltage at the origin due to both charges.miss of charged particle V d) (15 points) A charge. 93 = -5C. is placed at the origin and released. Calculate its final velocity after it has moved far away from its initial position. use m = 10 - 7