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Sodium ions (Na+) move at 0.841 m/s through a bloodstream in the arm of a person standing neara large magnet. The magnetic field has a strength of0.255T and makes an angleof 58.0° with themotion of the sodium ions. The arm contains 120 cm3 of bloodwith 3.00 1020Na+ ions per cubic centimeter. If no other ions were presentin the arm, what would be the magnetic force on the arm?

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