Three point charges, Q1 = 21.4 µC, Q2 = -34.6 µC, and Q3 = 67.3 µC, are arranged as shown in the figure. The Q, + A lengths y and x both equal 10.1 cm. Calculate the electric potential V at point A. y 3.81 x10° V = V Q, + Q, Incorrect

In a particular region of space, the electric potential is given by V = 9x — 4x²yz. What is the electric field in the region? Give x, y, and z components of the electric field vector E below. Hint a. E b. Ey c. Ez || =

Item 15 When a nerve impulse propagates along a nerve cell, the electric field within the cell membrane changes from 7.0×105 N/C in one direction to 3.1×105 N/C in the other direction. Part A Approximating the cell membrane as a parallel-plate capacitor, find the magnitude of the change in charge density on the walls on the cell membrane. Express your answer using two significant figures. ΠΙΑΣΦΑ |Aσ| = Submit Request Answer ? C/m²

What is the magnitude of the electric field at the point (2.90 i-7.20 j+5.50 k) m if the electric potential is given by V = 5.30xyz², where Vis in volts and x, y, and z are in meters? Number i Units