Pls help with qn 1 and 2

Problem 1: A long uniform line of charges A very long conducting tube (hollow cylinder) has inner radius a and outer radius b. It carries charge per unit length +a, where a is a positive constant with units of C/m. A line of charge lies along the axis of the tube. The line of charge has charge per unit length ta. (a) Calculate the electric field in terms of a and the distance r from the axis of the tube for WUT . 30 0-0 (i) r b (b) Show your results in a graph of E as a function of r. (c) What is the charge per unit length on (1) the inner surface of the tube (1i) the outer surface of the tube? Problem 2: Concentric Spherical Shells. A small conducting spherical shell with inner radius a and outer radius b is concentric with a larger conducting spherical shell with Inner radius c and outer radius d, as shown in the figure. The inner shell has total charge + 2q and the outer shell has charge +4q. (a) Calculate the electric field, E (magnitude and direction) in terms of q and the distance r from the common center of the two shells for i) rd b) Graph the radial component of E as a function of r. What is the total charge on the 1) inner surface of the small shell; li) outer surface of the small shell; lii) inner surface of the large shell; iv) outer surface of the large shell