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Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter28: Magnetic Fields
Section: Chapter Questions
Problem 46AP: Why is the following situation impossible? Figure P28.46 shows an experimental technique for...
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Question 5)

A) Crossed electric and magnetic fields are established over a certain region. The magnetic field is 0.330 T vertically downward. The electric field is 2.88 × 106 V/m horizontally east. An electron, traveling horizontally northward, experiences zero net force from these fields and so continues moving in a straight line. What is the electron’s speed? 

B) The magnetic field in a cyclotron used to produce radioactive tracers is 0.340 T. What must be the minimum radius of the dees if the maximum proton speed desired is 2.60 × 107 m/s? The mass of a proton is 1.673 × 10−27 kg. 

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