A positively charged particle of mass 6.94 x 10"kg is traveling due east with a speed of 85.9 m/s and enters a 0.324-T uniform magnetic field. The particle moves through one-quarter of a circle in a time of 1.69 x 10"s, at which time it leaves the field heading due south. All during the motion the particle moves perpendicular to the magnetic field. (a) What is the magnitude of the magnetic force acting on the particle? (b) Determine the magnitude of its charge. B (out of screen) (a) Number Units V (b) Number i Units VNear San Francisco, where the vertically downward component of the earth's magnetic field is 5.3 x 103 T, a car is traveling forward at 19 m/s. The width of the car is 2.1 m. Find the emf induced between the two sides of the car. If positive charge accumulates on the driver's side, the enter the emf as a positive number. If negative charge accumulates on the driver's side, the enter the emf as a negative number. Number i Units V