In order to determine the mass of a molecule, first an electron is removed from the molecule. The resulting ion is accelerated from rest by an electric potential difference 2.7 104 V and then enters perpendicularly a uniform magnetic field whose magnitude is 0.89 T. Its trajectory in the magnetic field is measured to be a circle of radius 0.15 m.
(a) What is the magnitude of the centripetal force exerted on the ion?
(b) What is the speed of the ion?
(c) Find the mass of the ion.