A thin glass rod is bent into a semicircle of radius r = 2.7 cm. A charge +q = 6.0×10¯6 C is uniformly distributed along the upper half, and a charge -q is uniformly distributed along the lower half, as shown. Find the magnitude and direction of the electric field E at Q3. P, the center of the semicircle. +q

A thin glass rod is bent into a semicircle of radius r = 2.7 cm. A charge +q = 6.0×10¯6 C is uniformly distributed along the upper half, and a charge -q is uniformly distributed along the lower half, as shown. Find the magnitude and direction of the electric field E at Q3. P, the center of the semicircle. +q