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Question
Convert the vector `vecr = 3hati + 2hatj` into a unit vector.
Solution
Given:
Position vector `hatr = 3hati + 2hatj`
Solution:
unit vector `hatr = vecr/|r|`
Here, |r| = `sqrt(3^2 + 2^2) = sqrt(9 + 4) = sqrt13`
`hatr = vecr/|r| = (3hati + 2hatj)/sqrt13`
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