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A guide wire in a theatre points along the vector 12 i… | StemPy Lab
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A guide wire in a theatre points along the vector 12 i + 4 j - 3 k. Which expression is the unit vector in the direction of the wire?
Mathematics
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High School (11–12)
Vectors and Three-Dimensional Geometry › Vector Algebra
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A guide wire in a theatre points along the vector
12
i
^
+
4
j
^
−
3
k
^
12\hat i + 4\hat j - 3\hat k
12
i
^
+
4
j
^
−
3
k
^
. Which expression is the unit vector in the direction of the wire?
12
i
^
+
4
j
^
−
3
k
^
169
\dfrac{12\hat i + 4\hat j - 3\hat k}{169}
169
12
i
^
+
4
j
^
−
3
k
^
12
i
^
+
4
j
^
−
3
k
^
13
\dfrac{12\hat i + 4\hat j - 3\hat k}{13}
13
12
i
^
+
4
j
^
−
3
k
^
12
i
^
+
4
j
^
+
3
k
^
13
\dfrac{12\hat i + 4\hat j + 3\hat k}{13}
13
12
i
^
+
4
j
^
+
3
k
^
12
i
^
+
4
j
^
−
3
k
^
19
\dfrac{12\hat i + 4\hat j - 3\hat k}{19}
19
12
i
^
+
4
j
^
−
3
k
^
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← A is the point (2, -1, 5) and B is the point (-3, 4, 1). Which vector is overrightarrowAB?
In the parallelogram ABCD of the figure, overrightarrowAB = p and overrightarrowAD = q. Which vector is overrightarrowBD? →
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