(4%) Problem 20: A uniformly charged rod of length L = I. 7 [I] lies along the x-axis with its right y end at the origin. The rod has a total charge of Q = 8.8 11C. A point P is located on the x-axis a distance a = 1.4 m to the right of the origin. al X 'UIIIccxpt-rltamm E q? 25% Part (2) Consider a thin slice of the rod of thickness 05: located a distance it away from the origin. What is the direction of the electric eld at point P due to the charge on this thin slice of the rod? Posi1ive xditection \\f Correcl! E 33 25% Part (1)) Write an equation for the electric eld dE at point P due to the thin slide of the rod dx. Give your answers in terms of the variables Q, L, x, a, (it, and the Coulomb constant, 1:. Notice that the coordinate x will be less than zero over the length of the rod. alE=(de:vr)fL(n+3)2 XAttemptsRemain a $3 25% Part (c) Integrate the electric eld contributions from each slice over the length of the rod to write an equation for the net electric eld E at point P. E =( k Q )a'L 7 a X Attempts Remain D $3 25% Part ((1) Calculate the magnitude of the electric eld E in kilonewtons per coulomb (kN/C) at point P due to the charged rod. Grade Summary E = ' Deductions 0% Potential 100%