How big is the pulling force? A7.00-cm-long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire and rail is 0.320 S2: Pulling the wire at a steady speed of v = 4.00 m/s causes 3.80 W of power to be Express your answer with the appropriate units. > View Available Hint(s) dissipated in the circuit. HA F = Value Units Submit Part B What is the strength of the magnetic field? Express your answer with the appropriate units. > View Available Hint(s) HA I3 B= Value Units

How big is the pulling force? A7.00-cm-long wire is pulled along a U-shaped conducting rail in a perpendicular magnetic field. The total resistance of the wire and rail is 0.320 S2: Pulling the wire at a steady speed of v = 4.00 m/s causes 3.80 W of power to be Express your answer with the appropriate units. > View Available Hint(s) dissipated in the circuit. HA F = Value Units Submit Part B What is the strength of the magnetic field? Express your answer with the appropriate units. > View Available Hint(s) HA I3 B= Value Units