Look at the circuit shown below which uses two identical springs to support a 10-cm long horizontal wire with a mass of 10 gm. The weight of the wire causes the spring to stretch by a distance 0.1 cm (each) in the absence of the magnetic field B. When a uniform magnetic field is turned on (as shown in the figure) in the region containing the horizontal wire, the springs are stretched by an additional 0.5 cm each. Calculate the magnitude of the magnetic flux density B. Use elle O 42 12 V Springs. 10 cm eeee B the force equation for spring F = kd (where k is the spring constant and d is the stretching distance) to solve this problem.