Are all the formulas we need to know on the formula sheet?
The Princeton Review book includes many formulas about waves that are not on the formula sheet, should I invest time in learning them?
There are some very basic formulas (a=Δv/t and ΔE=0) and some very complex formulas (v=F/(m/l), where F is tension and P=RI^2) that do not appear on the equation tables. The basic formulas should be thoroughly internalized before the exam. However, the complex formulas that are not on the tables do not have to be memorized, but their relationships between variables might. For example, a question may ask you what happens to the power of a bulb as current and resistance increase but voltage remains the same. This question could be answered by memorizing a very specific formula, but it is better to just think conceptually with I=V/R and notice that as resistance increases and voltage is unchanged, current must increase. And if current increases and voltage remains the same, power will increase because P=IV.
In short, memorizing specific formulas is unnecessary unless if they are purely conceptual or basic. Remember that most of this exam is conceptual and required very few calculations.