(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

You are given vectors A= 5.1 { i } - 7.0 { j } and vec B= - 3.8 { i } + 7.3{j}. A third vector C lies in the xy-plane. Vector C is perpendicular to vector A and the scalar product of vec C with vec B is 16.0.

Find the x -component and y-component of vector vec C

2. Relevant equations

Not sure, I have no idea how to find components of C with no angles given. I used the Pythagorean theorem for finding the magnitudes of A and B, however, I do not know how/if that even helps.

3. The attempt at a solution

Ok, for an attempt, I found the magnitude of A to be 8.6023 m while the magnitude of B to be 8.2293 m. I have tried to find C, but I have many different answers I keep getting, all around 5.0 meters, but definitely not right. I finally reached an answer of -2.04 m for the x-component, and it was utterly wrong.

I really need help. thanks. If you need me to clear anything up, just ask.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Phyiscs, finding components with per. line

**Physics Forums | Science Articles, Homework Help, Discussion**