A copper solenoid is set to magnetize a copper-nickel bar (0.0018 at% ni). with a 12.5 a current, a diameter of 0.6 cm, the permeability of the alloy is 2.06e-3 h/m and an inductance of 1.37 a h/m2 . what is the turns to length (1/m) ratio of the solenoid? (3 m