Derive velocity of forward propagation = wavelength x frequency, probably deriving it from the formula for angular motion.


2 speakers, 1 behind the other, same hertz. Someone walking towards it, a distance of 12 meters walking for 6 seconds, find the points of constructive interference.


On an alien planet, figure out what acceleration from gravity is. String is hanging. Given length and density. There’s a mass hanging, weight given. Figure out the acceleration from gravity. Density is negligible compared to the mass of the string. The velocity of the wave through the string is given.


They are pretty vague because he didn't want to give us the exact questions but that's what I've got. Could someone help me understand how I should approach those problems on the test so when we have numbers or more specific questions I'll be able to get through them?


Thanks!