Problem 23.47 Charge is uniformly distributed along a thin, flexible rod of length L. The rod is then bent into the semicircle shown in the figure (Figure 1). Figure 1 of 1 xx xxxx + Center XXXXX** X Part A Find an expression for the electric field at the center of the semicircle. Hint: A small piece of arc length As spans a small angle A0 = As /R, where R is the radius. Express your answer in terms of the variables Q, L, unit vectors i, j, and appropriate constants. Submit E= |VE Submit My Answers Give Up Part B Evaluate the field strength if I = 15 cm and Q = 45 nC. Express your answer with the appropriate units. Value Units My Answers Give Up ? ? Provide Feedback Continue