Charged particles in a uniform magnetic field will undergo circular motion with a period of T = 2ฯm/(qB). The magnetic field of the Earth is roughly 10โปโด tesla, assuming it is uniform. Given the mass of a proton to be 1.6 x 10โปยฒโท kilograms and its electric charge to be 1.6 x 10โปยนโน coulombs, providing your answer in scientific notation to one significant figure, what period in seconds would you measure for a proton?