Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 17 - Exercises and Problems: 24

Answer

Hydrogen is moving faster.

Work Step by Step

Recall that $H_2$ weights $3.3 \times 10^{-27}$ kg, and Sulfur Dioxide weighs $1.1 \times 10^{-25}$ kg. Thus: $ v_ = \sqrt{\frac{3(T)}{m}}$ For Hydrogen: $ v = \sqrt{\frac{3(1.4 \times 10^{-23})(75)}{3.3 \times 10^{-27}}} = 967 m/s$ For Sulfur Dioxode: $ v = \sqrt{\frac{3(1.4 \times 10^{-23})(350)}{1.1 \times 10^{-25}}} = 370 m/s$
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