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13.  ssm In the operating room,
anesthesiologists use mass spectrometers to monitor the respiratory gases of
patients undergoing surgery. One gas that is often monitored is the anesthetic
isoflurane (molecular mass =
3.06 x 10-25 kg). In a spectrometer, a singly ionized
molecule of isoflurane (charge =
+e) moves at a speed of 7.2 x 103 m/s on a circular path that has a radius of
0.10 m. What is the magnitude of the magnetic field that the spectrometer
uses?
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