Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 31 - Think and Explain: 50

Answer

Uranium has more momentum. Hydrogen has the longer wavelength.

Work Step by Step

Momentum is p = mv, so the larger-mass uranium atom has more momentum. The de Broglie wavelength is h/p, so the atom with smaller momentum p has the longer wavelength.
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