Will check what you've done in a bit Roc, thank you! For the time being, I did some problems with my teacher and here are the updated questions I need.

26
35
38
44
53, parts b-d
57
60
66
72

should read:
(B*4)/(1+(1/16)*4^2) = 1

(this is what I used to do the calculations, I just typed it wrong here, so the answer is still the same).

This post was edited by Rocinante on Dec 17 2013 07:13am