Chapter 7 Problems Score: 22/28 11/13 answered . Question 11 Two large charged plates of charge density 145/C/m face each other at a separation of 8 mm. Choose coordinate axes so that both plates are parallel to the cy plane, with the negatively charged plate located at 2 = 0 and the positively charged plate at z = +8 mm. Define potential so that potential at z = 0 is zero (V (z = 0) = 0). Hint a. Find the electric potential at following values of z: o potential at z = -8 mm: V(z = -8 mm) = V . potential at = = +7.4 mm: V(z = +7.4 mm) = V. . potential at 2 = +8 mm: V(z = +8 mm) = V. . potential at z = +15.8 mm: V(z = +15.8 mm) V. b. An electron is released from rest at the negative plate. With what speed will it strike the positive plate? The electron will strike the positive plate with speed of m/s. (Use "E" notation to enter your answer in scientific notation. For example, to enter 3.14 x 1012, enter "3.14812".) Question Help: Message instructor Submit QuestionChapter 7 Problems Score: ZEIZS 1H13 answered I Question 2 v Consider two positive charges Q1 and Q2 of the same magnitude 3.5 pC symmetrically placed on the z-axis at I 2 224.2 cm. Consider a third positive charge Q3 of magnitude 2 [KI and mass 1 g moving along the y- axis. Where applicable, let the potential energy be zero when charges are very far apart from each other. Hint a. What is the potential energy of Q3 when it is at y = 4 cm? Hint for [a] PEQJ =i J. b. If Q3 is Ieleased fl om rest at y = 4 pm, how fast is it moving when it reaches 9' = 3.2 cm? Hint for [in] \"Q1! =| | m/s' Question Help: El Message instructor SLIJITIit