Part A A 0.60 m copper rod with a mass of 5.00x10-2 kg carries a current of 15 A in the positive x direction. Let upward be the positive y direction. What is the magnitude of the minimum magnetic field needed to levitate the rod? Express your answer using two significant figures. AEd T Submit Request Answer Part B What is the direction of the minimum magnetic field needed to levitate the rod? positive a direction O negative a direction positive y direction O negative y direction positive = direction negative = direction Submit Request