Protons exit a cyclotron with a kinetic energy of 9.51 MeV. The alternating potential difference has a magnitude of 3.83 x 10⁴ V and the magnetic field has a modulus of 1.5T. (a) What is the radius of the cyclotron in cm? (b) How long, expressed in s, do protons take to exit the cyclotron, once they are emitted from the source ? In the answer box enter the ratio of results (a) divided by (b). Express this ratio with 2 digits of precision.