I remember seeing a site that had a list of various aviation math forumulas but am not able to locate it. Anyone have a link or know of a site like this that you wouldn't mind posting a link for?

Also, anyone know what the formula to compute the following problem is? I can compute it on a E6B but don't remember a formula.

If I have to maintain a climb gradient of 4.5% on takeoff and my ground speed is 119 kts during the climb, what would this compute to in feet per minute?

Things have gotten so automated for me that I am forgetting this stuff and need to get a review.

Thanks in advance to all who reply.