Finding ez: Solving a 3D Vector Equation

[hubluh]

Homework Statement

Find the value of ez if e = 1/3i + 2/3j + ezk

Homework Equations

Any help?

The Attempt at a Solution

Have no idea where to start

 

[Greg Bernhardt]

Can you tell us anything about this equation? What textbook are you using?

 

[hubluh]

Im currently studying for an exam and I found this in past papers. I am using no book atm.

 

[haruspex]

My only guess is that e is supposed to be a unit vector. Any idea if that is right? If not, is it possible for you to upload an image of the question? You might be omitting a key detail which you do not realize is important.

 

[hubluh]

This is the exact question :" The vector e=1/3i+2/3j+ezk is a unit vector. Find ez?"
The possible answers are 0,1,1/3 and 2/3

 

[PeroK]

This is the exact question :" The vector e=1/3i+2/3j+ezk is a unit vector. Find ez?"
The possible answers are 0,1,1/3 and 2/3

Do you know what a unit vector is?

 

[Elvis 123456789]

This is the exact question :" The vector e=1/3i+2/3j+ezk is a unit vector. Find ez?"
The possible answers are 0,1,1/3 and 2/3

Do you know what it means for a vector to have a unit length (i.e. to be a unit vector)?

 

[hubluh]

Ahh I get you know. It has a magnitude of 1.
Thanks so much