Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 3 - Vectors - Problems - Page 58: 23

Answer

3.2

Work Step by Step

$C=\sqrt{3.0^{2}+4.0^{2}}=5.0$ and $\vec{C}+\vec{B}=(5.0)\hat{j}$ Then; $\vec{B}=(5.0)\hat{j}-\vec{C}$ $\vec{B}=(5.0)\hat{j}-(3.0\hat{i}+4.0\hat{j})$ $\vec{B}=-3.0\hat{i}+\hat{j}$ $B=\sqrt{(-3.0)^{1}+1.0^{2}}=3.2$
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