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A.
\(\frac{1}{13}(-5i - 12j)\)
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B.
\(\frac{1}{13}(5i - 12j)\)
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C.
\(\frac{1}{13}(-5i + 12j)\)
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D.
\(\frac{1}{13}(5i + 12j)\)
Correct Answer: Option C
Explanation
The unit vector \(\hat{n} = \frac{\overrightarrow{r}}{|r|}\)
\(\hat{n} = \frac{-5i + 12j}{\sqrt{(-5)^{2} + (12)^{2}} \)
= \(\frac{-5i + 12j}{13} \)
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