The amount of meat in prehistoric diets can be determined by measuring the ratio of the isotopes nitrogen-15 to nitrogen-14 in bone from human remains. Carnivores concentrate, so this ratio tells archaeologists how much meat was consumed by ancient people. Suppose you use a velocity selector to obtain singly ionized (missing one electron) atoms of speed 8.50 {rm km}/{rm s} and want to bend them within a uniform magnetic field in a semicircle of diameter 25.0 {rm cm} for the {^{12,}{rm C}}. The measured masses of these isotopes are 2.32×10-26 {rm kg} ({^{14,}{rm N}}), 1.99×10-26 kg and 2.49×10-26 Kg.

Find the separation of the isotopes at the detector.