A uniformly charged insulating rod of length 19.0 cm is bent into the shape of a semicircle as shown in the figure below. The rod has a total charge of -7.50 UC. (a) Find the magnitude of the electric field (in N/C) at O, the center of the semicircle. N/C (b) Find the direction of the electric field at O, the center of the semicircle. to the left O to the right O upward O downward O into the page O out of the page (c) What if? What would be the magnitude of the electric field (in N/C) at O if the top half of the semicircle carried a total charge of -7.50 UC and the bottom half, insulated from the top half, carried a total charge of +7.50 JC? N/C (d) What would be the direction of the electric field at O if the top half of the semicircle carried a total charge of -7.50 JC and the bottom half, insulated from the top half, carried a total charge of +7.50 UC? O to the left O to the right upward O downward into the page O out of the page Need Help? Read It Master It Submit Answer [-/1 Points] DETAILS SERPSE10 23.2.OP.006.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A 38.0-cm-diameter circular loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is measured to be 5.58 x 105 N . m2/C. What is the magnitude of the electric field? MN/C Submit Answer [-/3 Points] DETAILS SERPSE10 23.2.OP.007. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Consider a closed triangular box resting within a horizontal electric field of magnitude E = 8.90 x 104 N/C as shown in the figure below. 30.0 cm 10.0 cm 60.0 (a) Calculate the electric flux through the vertical rectangular surface of the box. KN . m2/c (b) Calculate the electric flux through the slanted surface of the box. KN . m2/C (c) Calculate the electric flux through the entire surface of the box. KN . mz/C