A mass spectrometer is used to separate the uranium isotopes ^235 U} and ^238 U}. part A )What is the ratio of the radii of their circular paths? part B)In this spectrometer, singly ionized uranium ions pass first through a 130m/s velocity selector, and then into a 2.90T magnetic field. Find the diameter of the arc traced out by the ^235 U} isotope. part C )Find the diameter of the arc traced out by the ^238 U} isotope.