1. The Solar Wind consists of particles moving at speeds of 500 km/s. If an electron moving at this speed moves perpendicular to the Earth's magnetic field where it has a strength of 200 nT (e.g. 200 x 10-9T), how large a circle will the electron's trajectory be deflected into (around the field lines) and what will be the frequency of this circular motion? If this electron emits light at this frequency what is the wavelength of this light and in what part of the spectrum does it appear at? (Marks: 6) Hint: remind yourself of the equations for centripetal force