physics
posted by rick .
An electric power line carries a current of 1600 A in a location where the earth's magnetic field is 4.0*105 T. The line makes an angle of 75° with respect to the field. Determine the magnitude of the magnetic force on a 130 m length of line.

F = B i L sin 75
B is the megnetic field in Tesla
i is the current in amperes
L is the length of the wire