Answer
$$6.32 j.$$
Work Step by Step
We have
$$\sqrt{-40}=\sqrt{(-1)(40)}=\sqrt{-1} \sqrt{40}=6.32 j.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 11 - Section 11.5 - Imaginary Numbers - Exercise - Page 378: 12
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