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edugen wileyplus.com Wiley PLUS Contact Us Wiley PLUS Halliday, Fundamentals of Physics, 10e University Physics (University Physics Home Read, Study & Practice Assignment Gradebook ORION Assignment Open Assignment MESSAGE MY INSTRUCTOR FULL scREEN PRINTER VERSION BACK NEXT ASSIGNMENT RESOURCES Chapter 28, Problem 064 242 HW 16 Chapter 28, Problem 006 The figure gives the potential energy U of a magnetic dipole in an external magnetic fiel 8 as a function of angle p between the directions of B and the dipole Chapter 28 Problem 012 moment. The vertical axis scale is set by us 1.9 x 10 J. The dipole can be rotated about an axle with negligible friction so as to change p. Counterclockwise rotation Chapter 28 Problem 016 from p 0 yields positive values of p, and clockwise rotations yield negative values. The dipole is to be released at angle p 0 with a rotational kinetic energy of 5.8 x 10 Chapter 28, Problem J, so that it rotates counterclockwise. To what maximum value of p will it rotate? 017 Chapter 28 Problem 030 UV (10 J Chapter 28 Problem 057 er 28 Proble Review Score Review Results by Study 1800 1800 objective Number Units the tolerance is +/-7% Click if you would like to show work for this question Qpen Show Work GO TUTORIAL version 4.22.2.9 License Agreement l Privacy Policy I 2000-2017 lohn Wiley & Sons, Inc. All Rights Reserved. A Division of lohn Wiley & Sons Inc.Explanation / Answer
from the graph, initial potential energy =M B= -2.5 units (1.9x10-4)=-4.75x10-4.j where M= magnetic dipole moment and B = magneti field
kinetic energy= 5.8x10-4 j
total energy=KE+PE=-4.75x10-4 + 5.8x10-4.
total energy=1.05x10-4 j
this total eenrgy will get converted into potential energy
U= - M B cos
1.05x10-4 = -(4.75x10-4)cos
cos=-0.22
=102.7 degrees.
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