# Homework Help: Need Help with formulas please

1. Aug 9, 2004

### woz

Hello, the teacher gave us this assignment in which we had to separate some variables from equations. (example: E=mc^2 for m -> m=E/c^2). I had trouble with 4 of them (the ones in the attachment), I would appreciate some help, The procedure is really important since I want to learn how to solve them.

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2. Aug 9, 2004

### enigma

Staff Emeritus
Hi woz,

While we're waiting for the attachment to get approved...

Why don't you go ahaid and post what you've tried / where you're stuck on them. It'll help us help you.

3. Aug 9, 2004

### Zurtex

9. Do you know how to complete the square?

10. Can you get thins in terms of $\cos \theta$ and apply $\arccos$ to both sides?

11. Simmilar to 10

15. This seems to be a trick question, the equation isn't dependent on m at all

4. Aug 9, 2004

### marlon

the solution in a word doc

regards
marlon

Last edited: Feb 9, 2006