Sodium ions (na+) move at 0.844 m/s through a bloodstream in the arm of a person standing near a large magnet. the magnetic field has a strength of 0.260 t and makes an angle of 50.0° with the motion of the sodium ions. the arm contains 110 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?

Suppose that a mass of 2 kg is attached a spring whose spring constant is 50. the system is damped such that b = 12 . the mass is set in motion with an initial velocity of -8 m/s at a position 0 meters from equilibrium. set up and solve a differential equation that models this motion. write your solution in the form a cos ( ω t − α ) where α is a positive number. use your solution to fill in the information below: what is the amplitude of the motion? what is the value of ω ? what is the phase shift?