1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Unit vector?

  1. Mar 1, 2010 #1
    1. The problem statement, all variables and given/known data
    Im given two vectors and im told to find theyre unit normal vector.


    2. Relevant equations

    a x b

    3. 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 [tex]\hat{}n[/tex] = n/[tex]\left|n\right|[/tex]?
     
  2. jcsd
  3. Mar 1, 2010 #2
    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
     
  4. Mar 1, 2010 #3
    Understood, thank youuuuuu.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Unit vector?
  1. Unit vectors (Replies: 10)

  2. Unit vectors (Replies: 6)

  3. Unit vectors. (Replies: 3)

  4. Unit Vectors (Replies: 2)

Loading...