COLLEGE PHYSICS,VOLUME 1
2nd Edition
ISBN: 9781319115104
Author: Freedman
Publisher: MAC HIGHER
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Chapter 27, Problem 1QAP
To determine
The definition of an isotope.
Expert Solution & Answer
Explanation of Solution
As the atoms of its each element has its unique number of protons and the same number of electrons. Many of the properties of atoms are related to this number usually known as atomic number Z, as well many properties of nuclei arise from both the value of Z and the value of the neutron number N, which is known as number of neutrons in the nucleus. For each element the most common configuration of N and Z corresponds to the most nuclide, nuclei of that element with a different number of neutrons is known as isotopes.
So, Isotopes are nuclides with the same atomic number, Z, but a different number of neutrons, N.
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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 15N15N, 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) nitrogen atoms of speed 8.50 km/skm/s and bend them along a semicircle within a uniform magnetic field. The 14N14N atoms travel along a semicircle with a diameter of 32.2 cmcm. The measured masses of these isotopes are 2.32×10−26kg2.32×10−26kg (14N14N) and 2.49×10−26kg2.49×10−26kg (15N15N).
Part A.
Find the separation of the 14N14N and 15N15N isotopes at the detector.
Express your answer with the appropriate units.
Chapter 27 Solutions
COLLEGE PHYSICS,VOLUME 1
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