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March 29, 2017

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1. Consider the two vectors P and Q. The definition of P is P = 􀀃i × (􀀃i × 􀀃j). The
definition of Q is Q = (􀀃i × 􀀃i) × 􀀃j .
a. The magnitude of P is equal to the magnitude of Q.
b. The magnitude of P is greater than the magnitude of Q.
c. The magnitude of P is less than the magnitude of Q.

Is the answer A

  • Physics - ,

    P
    (i x j) = k
    i x k = -j

    Q
    i x i = 0
    0 x j = 0

    so|P| > |Q|

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