Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

Published by Pearson
ISBN 10: 0133942651
ISBN 13: 978-0-13394-265-1

Chapter 42 - Nuclear Physics - Stop to Think 42.4 - Page 1225: 1

Answer

c

Work Step by Step

Starting with 1000 atoms, one half-life would leave 500 leftover atoms. The next half-life takes away 250 atoms, leaving 250 remaining or 750 decayed.
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