The potential in a region between x = 0 and x = 6.00 m is V = a + bx, where a = 19.6 V and b = -4.90 V/m. (a) Determine the potential at x = 0. Determine the potential at x = 3.00 m. Determine the potential at x = 6.00 m. (b) Determine the magnitude and direction of the electric field at x = 0. magnitude V/m direction ---Select--- v Determine the magnitude and direction of the electric field at x = 3.00 m. magnitude V/m direction ---Select--- v Determine the magnitude and direction of the electric field at x = 6.00 m. magnitude V/m direction ---Select--- vAlong, straight metal rod has a radius of 5.10 cm and a charge per unit length of 28.8 nClm. Find the electric eld at the following distances from the axis of the rod, where distances are measured perpendicular to the rod's axis. (a) 1.60 cm direction (b) 11.0 cm magnitude E N/C direction (c) 110 cm direction