The figure below shows a long conducting coaxial cable and gives its radii (R, = 2.2cm, R2=8cm, R3=16cm). The outer cable has a uniform current density of J = 2.8 A/m2, and the inner cable carries a uniform current I = 1.3A flowing in opposite direction. Assume that the currents in each wire is uniformly distributed over its cross section. Determine the magnitude of the magnetic field in terms of Ho at a distance r = 11cm from the center of the cable. Express your answer using two decimal places. R1. R2 R3