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The magnitude of the scalar p for which the vector p(-3 i -2 j +13 k ) is of unit length is :

Options

  1. A1 8
  2. B1 64
  3. C182
  4. D1 182

Correct answer

D. 1 182

Step-by-step solution

|p(-3 i -2 j +13 k )|=1 p 9+4+169 =1 p= 1 182 .

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