Finding Unit Normal Vector of 2 Vectors

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SUMMARY

The discussion focuses on finding the unit normal vector of two vectors using the cross product method. The user initially calculated the normal vector as i + j + k but questioned whether this vector is a unit vector. It was clarified that the resulting vector is not a unit vector, and the correct unit vector can be derived using the formula \(\hat{n} = \frac{n}{|n|}\), resulting in the unit vector being \((i + j + k) / \sqrt{3}\).

PREREQUISITES
  • Understanding of vector operations, specifically cross products.
  • Knowledge of unit vectors and their properties.
  • Familiarity with vector magnitude calculations.
  • Basic algebra for manipulating vector equations.
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  • Study the properties of cross products in vector mathematics.
  • Learn how to calculate the magnitude of a vector.
  • Explore the concept of unit vectors in three-dimensional space.
  • Practice finding normal vectors in various geometric contexts.
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Students studying vector mathematics, physics enthusiasts, and anyone learning about geometric interpretations of vectors and their applications.

milan666
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Homework Statement


Im given two vectors and I am told to find theyre unit normal vector.

Homework Equations



a x b

The Attempt at a Solution


I used the cross product of the 2 vectors to find the normal vector, however, it came out to be i + j + k. My question is, is this already a unit vector or do i need to use the equation \hat{}n = n/\left|n\right|?
 
Physics news on Phys.org
i+j+k is not a unit vector unit vector has magnitude 1 unit vector in the direction of i+j+k is (i+j+k)/3^.5
 
Understood, thank youuuuuu.
 

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