2014-04-08, 10:30 PM
Tay Wrote:d^2f/dt^2 = v^2 d^2f/dx^2
that is all I know about waves
Funny enough, that exact equation didn't even show up on the test even though it was in the covered chapters.
There were four problems:
nonlinear oscillator (given a potential for an ionic bond, basically just have to take derivatives. this one was a joke lol)
coupled oscillators (two pendulums connected by a spring, find eqn of motion, frequencies, generalized coordinates. classical mechanics stuff)
standing waves (reflection/transmission. had to use trig identities)
and a Fourier transform.
The more difficult formulas needed were given on a separate page but they were in the same order the questions used them so lol. average is going to be in the 60s like usual I bet.
We had a quiz once where it was literally "take the 2nd and 3rd derivative and divide them" and WAY too many people were getting 2/10 like seriously i dont even