find the magnitude and unit vector of the vector
A-3i 2j -5
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Answer:
find the magnitude and unit vector of the vector
A-3i 2j -5
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let ā be the position vector of A = -3i + 2j - 5k.
ā = -3i + 2j - 5k
| ā | = √( (-3)² + (2)² + (-5)² ) = 9 + 4 + 25
|ā| = 13 + 25 = 38 ...magnitude
û_a = ā/| ā| = (-3/38 )i + (1/19)j - (5/38)k ....unit vector
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