Consider a very long, cylindrical insulator in the shape of a pipe. In the figure below, this pipe is shown in cross-section, the length of the pipe extends into and out of the page. Note the pipe has a thick wall (blue region). The pipe's wall has an inner radius of R = 1 cm and an outer radius of 2R = 2 cm. The wall or blue region is uniformly charged throughout its volume with charge density 1.6 uC/m . Note that there is no charge in the white region. 2R R What is the magnitude of the electric field inside the insulator at a distance r from the central axis of the pipe, r = 1.8 cm ? The permittivity of free space is 60 = 8.8542 x 10-12 C2/N . m and the volume of a cylinder with radius r and length ( is V = Tre. Answer in units of N/C