Modern Physics
Modern Physics
3rd Edition
ISBN: 9781111794378
Author: Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher: Cengage Learning
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Chapter 13, Problem 2Q

A proton precesses with a frequency ωp in the presence of a magnetic field. If the intensity of the magnetic field is doubled, what happens to the precessional frequency?

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A magnetic needle with magnetic moment μ = 0.015 Am² is placed in a uniform magnetic field B = 0.45 T as shown in the figure. The angle between the direction of the magnetic moment and the direction of the magnetic field is = 95°. Randomized Variables μ = 0.015 Am² B = 0.45 T 0 = 95° Express the potential energy U in terms of μ, B, 0. Calculate the numerical value of U in J. 1P B If can be changed, which value has the minimum potential energy? Give your answer in degrees. If can be changed, which value has the maximum potential energy? Give your answer in degrees. Ignore the mass of the needle, express the work needed to change the angle from 0 to a in terms of µ, B, 0, a. If a = 155°, calculate the numerical value of the work in J. O 1E
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Magnets and Magnetic Fields; Author: Professor Dave explains;https://www.youtube.com/watch?v=IgtIdttfGVw;License: Standard YouTube License, CC-BY