Our sun is constantly belching out protons that travel to Earth and encounter Earth's magnetic field. These particles can become "trapped" in the field when they start to travel in circles due to the magnetic forces! According to NASA, the solar protons reach Earth with a speed of about 400 km/s. High up in the atmosphere the protons encounter Earth's magnetic field that has a strength of 1.2x10 T. (The unit for magnetic field strength (B) is the tesla, T.) The angle between the magnetic field and the velocity of the protons is 90 What is the frequency at which these protons circle? (mass of a proton = 1.67 x 10-27 kg)