1. The problem statement, all variables and given/known data A 1.0 cm copper wire of diameter 0.10 cm carries a current of 50.0 A to the east. Suppose we apply to this wire a magnetic field that produces on it an upward force exactly equal in magnitude to the wire's weight, causing the wire to "levitate." What are the field's direction and magnitude. 2. Relevant equations B = [(Mu)I]/[2(pi)r] 3. The attempt at a solution I don't really know how to get this one started. Am I supposed to determine the weight of the copper wire by the area and the atomic weight? Can somebody please help me out with this one?