Recent content by jason177

Never mind, I got it

Homework Statement Polymers, like rubber, are made of very long molecules, usually tangled up in a configuration that has lots of entropy. As a very crude model of a rubber band, consider a chain of N links, each of length l. Imagine that each link has only two possible states, pointing...

alright, thank you both for your replies

Alright this is a pretty simple question. So if A is a infinite subset of the reals, does that mean that its length is infinite (eg. the set of all numbers from 0 to infinite) or could it also be just a set with an infinite number of terms (eg. the set of all real numbers between 1 and 2)?

Alright, thank you very much, that makes sense

Homework Statement Basically I'm given Cv = aT + bT3 when T<50K and where Cv is the heat capacity of one mole of Aluminum and I'm asked to find an equation for the entropy as a function of T.Homework Equations dS = Cv/T dtThe Attempt at a Solution So I integrated the above equation and got S =...

Lets say you have a function f(x)=1/x-1/x+x this function would still be discontinuous at x=0 even though the 1/x's would cancel, right? Also I know that combinations of continuous functions are also continuous, so for example if f and g are continuous then f+g is continuous. So my other...

Alright well after playing around with it for a while I still have no idea what to do. How would I do it if we couldn't take Fick's first law for granted?

It doesn't say whether we can or not so I assume we can.

Homework Statement Imagine a narrow pipe, filled with fluid, in which the concentration of a certain type of molecule varies only along the length of the pipe (in the x direction). By considering the flux of these particles from both directions into a short segment \Deltax, derive Fick's...

Alright, thank you very much for the help

ok, so for change in energy content I would basically just use \DeltaU = Q+W ?

anyone have any ideas?

Homework Statement I don't need help on the problem itself but I did have a question about what does this mean by change in the energy content of the gas? The question is: For each of the four steps A through D, compute the work done on the gas, the heat added to the gas, and the change in the...

alright, so I got dP/dz = -g\rho does that sound about right?