An alpha particle (the nucleus of a helium atom), carrying a charge of 3.2 × 10^−19 C moves at 4.4 × 10^7 m/s at a right angle to a magnetic field. If the particle experiences a force of 3.9 × 10^−14 N due to the magnetic field, what is the magnitude of the magnetic field? Answer in units of T.

A cosmic ray electron moves at 7.5 × 106 m/s perpendicular to the Earth's magnetic field at an altitude where the field strength is 1.0 × 10-5 T. What is the radius, in meters, of the circular path the electron follows?

An alpha particle (a He nucleus, containing two protons and two neutrons) with a mass of 7.75×10−25kg traveling horizontally at 50.0 km/s  enters a uniform, vertical, 1.60 T magnetic field.a) What is the diameter of the path followed by this particle?b) What is the magnitude of the acceleration of the particle while it is in the magnetic field?

A particle with charge 1.602 × 10-19 C in a magnetic field of 3.58 T travels in a circle of radius 3.14 m at a speed of 9.95 m/s. What is the particle's mass? Answer in units of kg.