for 1b I am thinking dU/dx equals zero at (Xa,t1) and (Xb,t2). I'm still thinking about the other two. i know dy/dt=-v*dy/dx but am not certain of the values of dy/dt or dy/dx. I have a suspicion that dy/dx may be .5 at those other points.
I saw my professor today. He showed me that way using dy/dt the transverse velocity which can also be called the particle velocity right. I tried that at first but made a simple error so I kept on trying to figure a different way.
I made another post. I have the first test tomorrow and am...
Homework Statement
http://insight.ccsf.edu/file.php/4599/PDF/Exam1-Fall-2011.pdf
Homework Equations
v^2=T/μ
κλ=2∏
ω=2f and many more
The Attempt at a Solution
Starting with 1a the λ is 4/3*.015cm=.02cm since by the diagram the distance between the labeled point is 3/4 the...
I don't think i get it yet We're looking at the one point the junction where it is simultaneously the pulse on both strings so of course they have to be the same because they are the same thing. Therefore the derivatives would be the same thing. ?
If I hadn't seen a similar animation before I...
I know Ai+Ar=At. I figure I might be able to find all those variables in an equation with different coefficients and find the answer in the system of equations. I haven't succeeded in finding that equation though. I took the derivative of each equation with respect to t and had x at zero...
Homework Statement
http://www.flickr.com/photos/87153077@N04/7981084181/in/photostream/lightbox/
I've done the first one and worked a lot on 2/3. I don't even understand the power equations for 4 and haven't even looked at the rest. Please help. Seeing steps to solutions is how I learn.