A long straight wire has fixed negative charge with a linear charge density of magnitude 3.6 nC/m. The wire is to be enclosed by a coaxial, thin- walled, nonconducting cylindrical shell of radius 1.7 cm. The shell is to have positive charge on its outside surface with a surface charge density o that makes the net external electric field is zero. Calculate o.

A long straight wire has fixed negative charge with a linear charge density of magnitude 3.6 nC/m. The wire is to be enclosed by a coaxial, thin- walled, nonconducting cylindrical shell of radius 1.7 cm. The shell is to have positive charge on its outside surface with a surface charge density o that makes the net external electric field is zero. Calculate o.