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Mathematics
Problem
The vector
A
=
7
i
^
−
4
j
^
\mathbf{A}=7\hat{i}-4\hat{j}
A
=
7
i
^
−
4
j
^
is expressed in unit–vector form. What is the y–component of this vector? a)
4
4
4
b)
65
\sqrt{65}
65
c)
−
4
-4
−
4
d)
7
7
7
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