1. Limited time only! Sign up for a free 30min personal 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!

Cross product

  1. Feb 24, 2015 #1
    1. The problem statement, all variables and given/known data
    V1 and V2 are different vectors with lengths V1 and V2 respectively. Find |V1 X V2| if V1 and V2 are perpendicular.

    2. Relevant equations
    V1 X V2 = |V1|*|V2|sin(Θ)

    3. The attempt at a solution
    Since sin(90) = 1, V1 X V2 = |V1|*|V2|.
    When I input this answer it says its incorrect and the answer does not depend on V1 and V2. Is there something I'm missing?
     
  2. jcsd
  3. Feb 24, 2015 #2

    Orodruin

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Gold Member

    If the answer says that, are you certain the problem says perpendicular and not parallel? As formulated, you are correct.
     
  4. Feb 24, 2015 #3
    Yes it says perpendicular. The next question asked for parallel which is zero.
     
  5. Feb 24, 2015 #4
    It's probably a problem with inputting the answer. Thank you anyways.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Cross product
  1. Cross Products (Replies: 2)

  2. Cross Product? (Replies: 17)

  3. Cross Products (Replies: 6)

  4. Cross Products (Replies: 3)

Loading...