A positively charged particle of mass 5.40 10-8 kg is traveling due east with a speedof 70 m/s and enters a 0.45 T uniform magnetic field. The particle movesthrough one-quarter of a circle in a time of 2.80 10-3 s, at which time it leaves the fieldheading due south. All during the motion the particle movesperpendicular to the magnetic field.
(a) What is the magnitude of the magnetic force acting on the particle?
1 N
(b) What is the magnitude of the charge of the particle?
2 C