Answer
$T=4K$
Work Step by Step
Now from Formula, for $M / M_{\max }=50 \%\\$ we have $B / T=0.50$. So
$T=B / 0.50=$ $2 / 0.50=4 \mathrm{~K}$.
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 32 - Maxwell's Equations; Magnetism of Matter - Problems - Page 971: 64a
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