# Vector Problem

## Homework Statement

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

Any help?

## The Attempt at a Solution

Have no idea where to start

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

haruspex
Homework Helper
Gold Member
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 realise is important.

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
Homework Helper
Gold Member
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?

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)?

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