A long coaxial cable length of L consists of a cylindrical metal sheath of radioys b surrounding a solid conducting wire with radious a.The sheath and wire are given the same charge per length +Q/L. Use Gauss Law to find the electric field in terms of a,b,Q,L and distance r from the central axis of the wire in the region 0 < r < a, a< r < b , and r > b. What is the voltage as a function of a , b, Q , L and r for each region, defining voltage to be zero at infinity.