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Question 1
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The length of the projection of $\vec{a} = 2\hat{i} + 3\hat{j} + \hat{k}$ on $\vec{b} = -2\hat{i} + \hat{j} + 2\hat{k}$, is equal to:
A.
1/3
B.
2/3
C.
-2/3
D.
-1/3
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