Required information: In one type of mass spectrometer, ions having the same velocity move through a uniform magnetic field. The spectrometer is being used to distinguish 12C+ and 14C+ ions. The 12C+ ions move in a circle of diameter 31.5 cm. Use these atomic mass values: 12C, 12.0 u; 14C, 14.0 u.
What is the diameter of the orbit of 14C+ ions?