The figure shows a section of a long, thin-walled metal tube of radius R-4.25 cm, with a charge per unit length A-6.91 x 108 C/m What is the magnitude E of the electric field at radial distance (a) r- 1.48 cm and (b) r- 10.6 cm.

The figure is a section of a conducting rod of radius R₁ = 1.50 mm and length L = 12.90 m inside a thin-walled coaxial conducting cylindrical shell of radius R₂ = 11.0R₁ and the (same) length L. The net charge on the rod is Q₁ +3.68 x 10-12 C; that on the shell is Q₂ = -2.30Q₁. What are the (a) magnitude E and (b) direction (radially inward or outward) of the electric field at radial distance r = 2.30R₂? What are (c) E and (d) the direction at r = 5.20R₁? What is the charge on the (e) interior and (f) exterior surface of the shell? (a) Number Units

An infinite sheet charge of has a charge density of +44.81 pC/m2 and covers the entire x-y plane. A second infinite sheet of charge has a charge density of −53.2 pC/m2 covers the entire y-z plane. What is the magnitude of the electric field at any point not on either surface?

The figure is a section of a conducting rod of radius R₁ = 1.20 mm and length L = 13.00 m inside a thin-walled coaxial conducting cylindrical shell of radius R2 = 12.6R1 and the (same) length L. The net charge on the rod is Q₁ = +3.45 × 10-12 C; that on the shell is Q₂ = -2.17Q1. What are the (a) magnitude E and (b) direction (radially inward or outward) of the electric field at radial distance r = 2.10R₂? What are (c) E and (d) the direction at r = 5.03R₁? What is the charge on the (e) interior and (f) exterior surface of the shell? Re Ri