Apositively charged particle of mass is traveling due east with a speed of and enters a uniform magnetic field. the particle moves through one-quarter of a circle in a time of 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.

A55-kg pilot flies a jet trainer in a half vertical loop of 1200-m radius so that the speed of the trainer decreases at a constant rate. knowing that the plane has a speed of 550 km/h at point a, and the pilot experiences weightlessness at point c (i.e., the normal force from the seat bottom is zero), determine (a) the deceleration of the plane, (b) the force exerted on her by the seat of the trainer when the trainer is at point b.