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Suppose the electric field between the electric plates in the mass spectrometer of (Figure 1) is 2.58Af—104V/m and the magnetic fields B=BAc€?2=0.77T. The source contains carbon isotopes of mass numbers 12, 13, and 14 from a long-dead piece of a tree. (To estimate atomic masses, multiply by
1.67 Af—10Acˆ’27kg.)
Part A
How far apart are the lines formed by the singly charged ions of mass numbers 12 and 13 on the photographic film?
Part B
How far apart are the lines formed by the singly charged ions of mass numbers 13 and 14 on the photographic film?
Part C
What if the ions were doubly charged?
Transcribed Image Text:Sample B
and
2r.
B'
Detector
or film
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