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General

General

Easy

Question

What is the unit vector along $straight i with not stretchy hat on top plus straight j with not stretchy hat on top$ ?

$\frac{\hat{i} + \hat{j}}{\sqrt{2}}$
$\sqrt{2} (\hat{i} + \hat{j})$
$\hat{i} + \hat{j}$
$\hat{k}$

The correct answer is: $fraction numerator straight i with not stretchy hat on top plus straight j with not stretchy hat on top over denominator square root of 2 end fraction$

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