What is the difference between a scalar, a vector, and a unit vector? Can we take the product of two vectors?
1 Answer
Aug 12, 2017
See below.
Explanation:
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A scalar quantity has magnitude but no direction. An example of a scalar quantity is density.
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A vector quantity has both magnitude and direction. An example of a vector quantity is force.
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A unit vector is a vector with magnitude
#1# . An example of a unit vector is#hati# . -
There are many physical quantities which are expressed as the product of two vectors. For example, magnetic force is given as the cross product
#vecF=vecIvxxvecB# . Additionally, work is given as the dot product#W=vecF*vecd# .
