Ever had one of those days where it was a total waste of makeup? That's been my entire week. Stupid AP tests and their ability to completely screw up my reasoning abilities. I was just studying for my Phyics final right after reading three 200 + page AP guides. I couldn't find the formulas for some problems read:

An object 5 cm tall is placed 20 cm in front of a concave mirror whose focal length is 30 com. Where is the image formed and how tall is it?

An object is placed 25 cm from a convex mirror of focal length 20 cm. If the object is 2.5 cm tall, how tall is the image and where is it located?

A light beam enters glass (n=1.53) at an angle of incidence of 58 degres from air (n=1) Calculate the angle of refraction.

A 21 cm tall object is placed 60 cm in front of a 40 cm focal length coverging lens. Where is the image? How tall is it? Is the image real or virtual?

I looke all over but I could NOT find the bloody formulas, not in the text book, not on the website. Then I looked on the Formula Sheet. THE FOMULA SHEET? Why didn't I think of that in the first TWENTY MINUTES OF SEARCHING?!!?

It's always in the last place you'd look for it.

Duh, why the hades would I keep looking AFTER I FOUND IT!

I blame AP tests and their mind-numbing effects. And we're not even gonna get into the update that had NOTHING typed. Stupid AP tests.