Vectors Question 99
Question: The expression $ ( \frac{1}{\sqrt{2}}\hat{i}+\frac{1}{\sqrt{2}}\hat{j} ) $ is a
Options:
A) Unit vector
B) Null vector
C) Vector of magnitude $ \sqrt{2} $
D) Scalar
Correct Answer: A $ \vec{P}=\frac{1}{\sqrt{2}}\hat{i}+\frac{1}{\sqrt{2}}\hat{j} $ \ $ |\vec{P}|=\sqrt{{{( \frac{1}{\sqrt{2}} )}^{2}}+{{( \frac{1}{\sqrt{2}} )}^{2}}} $ = 1 \ It is a unit vector.
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Answer:
Solution:
BETA
