Answer
$ E = 0.2 \space J$
Work Step by Step
To calculate the energy absorbed by the body,
Note that 95% is absorbed
$ E = (0.95 ) E_{\alpha} \Delta N$
$ E = (0.95) (5.2 MeV)(1.6 \times 10^{-13} J/MeV) (2.5 \times 10^{11})$
$ E = 0.2 \space J$
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 42 - Nuclear Physics - Problems - Page 1306: 69c
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