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4. Which of the following is an accurate statement about vectors?

A. Rotating a vector about an axis passing through the tip of the vector does not change the vector(definitely not right)
B. The magnitude of a vector can be zero even if one of its components is not zero.(this ones not right either)
C. If two vectors have unequal magnitudes, it is possible that their vector sum is zero.
D. It is possible to add a scalar quantity to a vector(not right)
E. The magnitude of a vector may be positive even if all of its compenets are negative.

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1 answer
  1. V = -1 i - 2 j
    magnitude = sqrt (1+4) = sqrt 5
    which is +

    You could do C with 3 vectors, but I think not with 2.

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