Sodium ions (Na+) move at 0.861 m/s through a bloodstream in the arm of a person standing near a large magnet. The magnetic field has a strength of 0.256 T and makes an angle of 49.0° with the motion of the sodium ions. The arm contains 120 cm3 of blood with a concentration of 2.00 1020 Na+ ions per cubic centimeter. If no other ions were present in the arm, what would be the magnetic force on the arm?
N