what is a unit vector?
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A unit vector is a vector of length 1, sometimes also called a direction vector (Jeffreys and Jeffreys 1988). The unit vector having the same direction as a given (nonzero) vector is defined by. where denotes the norm of , is the unit vector in the same direction as the (finite) vector
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The physical quantities having magnitude as well as direction and follow vector law are called vector quantiy...
Unit vector = vector divided by magnitude
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