(6%) Problem 1?: A plastic rod of length d = 1.5 m lies along the xaxis with its midpoint at the origin. The rod carries a uniform linear charge densit3F 2. = 4.5 nC.-"nl. The point P is located on the postivevttaxis at a distance ft} = -"5 cm front the origin. The zaxis points out of the screen. \fA 25% Part (a) By symmetry the electric field at point P has no component in the Oy direction Oz direction Ox and y directions Ox and z directions Ox direction Oy and z directionsA 25% Part (b) Choose the correct expression for the y-component of the electric field at P due to a thin slice of the rod of thickness dx located at point x. O O O Grade Summar Deductions kxx A Potential dEy = dx dEy = dx dEy = dx (a2 + yo) (a2 + ya)3/2 (x2 + yo) Submissions O O O Attempts remain kyod yod (20% per attemp dEy = (a2 + y?) 3/2 dx dEy = (x2 + 43)3/2 dx d By = detailed view (x2 + y?)3/2 ax25% Part (c) Integrate your correct choice in part (b) over the length of the rod and choose the correct expression for the y-component of the electric field at point P. O O O Grade Summary 2kid 2kid 2Ad Deductions Ey = Ey = Ey = Potential 10 yo v d2 + yo yov d2 + 4yo yo v d2 + yo Submissions O Attempts remaining 2kd (33% per attempt) Ey detailed view yo v d2 + yoD 25% Part (d) Calculate the magnitude of the electric field at point P, in newtons per coulomb. E =