9. [12 Points] DETAILS SERCP11 16.2.0P.012. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The figure below shows two charged particles separated by a distance of d = 3.50 cm. The charges are q1 = -19 0 n0 and q2 = 23.0 nC. Point Bis at the midpoint between the two charges, and point A is at the peak of an eqUiiateral triangle, with each side of length d. as shown. (Assume the zero of electric potential is at innity.) A (I. d it. (D (a) What is the electric potential (in Id!) at point A? :w (b) What is the electric potential (in Id!) at point 3? :w Need Help? _' 10. [12 Points] DETAILS SERCP11 16.5.0P.030. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER (a) A lab technician connects a 8 00 V battery to the plates of a capacitor. After waiting a while, the capacitor reaches a maximum amount of 30 0 p0 of stored charge. What is the value of the capacitance (in pF)? :IHF (b) The capacitor is disconnected from the battery, discharged, and then connected to a 20.0 V battery. Again. a long enough time is waited for the capacitor to full):r charge. How much charge (in [10) is stored now? (Assume the capacitor can handle this new voltage without failing.) ENC Need Help? [2 Points] DETAILS SERCP11 16. 5. P. 029. _Y NOTES ASK YOUR TEACHER _RACTICE ANOTHER ConSIder the Earth and a cloud layer 900 m abovethe planet to be the plates of a parallel-plate capacitor. (a) fthe cloud layer has an area of 2.0 km2 = 2000000 m2. what is the capacitance? :F (b) fan electric field strength greater than 3.0 >