Question

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Part A 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 N, so this ratio tells archaeologists how much meat was consumed by ancient people. Suppose you use a velocity selector (Figure 1) to obtain singly ionized (missing one electron) atoms of speed 513 km/s and want to bend them within a uniform magnetic field of 0.510 T. The measured masses of these isotopes are 2.30 x 10-20 kg ("N) and 2.47 x 10-26 kg (15N). Find the separation of the 14N and 15N isotopes at the detector. Express your answer with the appropriate units. st Value Units Figure < 1 of 1 > Submit Request Answer st Provide Feedback Velocity selector selects particles with speed Particle detector * Magnetic field separates particles by mass, "the greater a particle's mass, the larger is the radius of its path.

Answer 1

radius of particles in magnetic field 8 = mv B then Separation , 0878-22 Doar (m-ma). Do => 0-47 – 2.30) x10*264.513x103 1.6x10-19 70.517 Do => 106.875 10-4 Do = 1.06 cm