Yes, that is correct. If is a scalar and V is a vector then the norm of is which is also equal to .

I'm not sure I understand your notation. Is U the same as u? What is j? I think perhaps you meant |(u dot v/|v|^2)u|and i had one more question, the next question is asking me to find the magnitude of the projection. so could i write this representation as follows? |proj of j onto u| =

|(u dot j/|v|^2) U|? thanks in advance.