All,

Ok, I'm studying away here and trying to master the material for the Extra class exam. I have to admit that my math skills are not the best, but in my defense I have not done such fun stuff when in school and certainly never took much algebra. So, I'm admitting my mathematical  ignorance  here and asking for a little mercy. grin
I want to understand how best to work out these problems because remembering the answers is probably almost as much work. grin
So, here is the question and this is dealing with resonance.
The forumla f sub r = r squared times l squared.
So, f is the resonant frequency and I got that and that is what I need to solve for.
So, r is 50 micro henrys and l is 200 pico farads.
I understand that I need to convert micro henrys to henrys and pico farads to farads. I gather multiplying 50 times 10 to minus 6 gets the job done and doing this on a calculator would be 50 times 10 (press the x y button) -6.
You would do the same for converting pico farads to farads.
However, at this point I'm not quite sure how to work out the rest and of course entering this into a scientific calculator is really important and would make the process a bit easier.
I realize the end result will be an answer that is in megahertz. If anyone could help with this I would really appreciate it. The electrical theory portion of the exam is going to be the difficult part for me. RUles etc. no problem, but this stuff which I'm sure is going to be a big part of the exam is going to be the make or break for me.

thanks,
73
Scott/N3BYY