A horizontal power line of length 54.2 m carries a current of 2.42 kA northward as shown in the figure below. The Earth's magnetic field at this...

A horizontal power line of length 54.2 m carries a current of 2.42 kA northward as shown in the figure below. The Earth's magnetic field at this location has a magnitude of 5.10 10-5 T. The field at this location is directed toward the north at an angle 65° below the power line.(a) Find the magnitude of the magnetic force on the power line.