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3 D space

  1. Feb 7, 2014 #1
    1. The problem statement, all variables and given/known data

    In 3D space a full vector can be represented I. All the following except
    A. In Cartesian vector form
    B.As a magnitude times a unit vector
    C. As a Cartesian vector times a unit vector
    D. As magnitude with coordinate angles
    2. Relevant equations

    3. The attempt at a solution
    I say the answer is reason being I found all the other statements correct therefore I solve by elimination of variables. Any help would be g greatly appreciated and verification for my answer.
  2. jcsd
  3. Feb 7, 2014 #2


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    What does a vector times a vector mean? Think about that.
  4. Feb 7, 2014 #3

    Is the answer c due to the fact that the vector times a vector can produce a scalar
  5. Feb 7, 2014 #4


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    Depends on what the problem means by 'times'. If the only product you know about is the dot product, then yes, answer c is certainly a candidate for elimination.
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