An -particle has a charge of +2e and a mass of 6.64 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.10 106 V and then enters a uniform magnetic field whose magnitude is 3.10 T. The -particle moves perpendicular to the magnetic field at all times.

Question

An -particle has a charge of +2e and a mass of 6.64  10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.10  106 V and then enters a uniform magnetic field whose magnitude is 3.10 T. The  -particle moves perpendicular to the magnetic field at all times.

(a) What is the speed of the -particle?
  m/s

(b) What is the magnitude of the magnetic force on it?
  N

(c) What is the radius of its circular path?
  m