Recent content by Oakwater

Homework Statement Given for polystyrene K = 1.6x10^5 and a = 0.71 and for PVC K = 1.5x10^5 and a = 0.77 a universal calibration curve has been created from PS and the molar mass of PVC at a certain elution volume has been calculated. The part I'm not sure on is the question: Show which of...

As far as I can see what has been done is that given that T1/T2 = e^u0 then T1/e^u0 = T2. Knowing that T1 is tightside tension and therefore Tmax, how is it that T1 = 1 in order to rearrange for T2 = e^u0? I'm sure the answer is very obvious but I really can't see what is going on.

Homework Statement http://imageshack.us/m/135/2262/beltz.jpg I do no understand as shown in the above picture why T1 = 1 to make e^u0 = e^-u0, could anyone offer an explanation as to why this is the case? Thanks Homework Equations All above The Attempt at a Solution

Homework Statement ∫(zdx+xdy+ydz) along the curve C: x(t)= cos(t), y(t)= sin(t), z = 3t, Boundaries are 0 and 2pi Homework Equations General integration and differentation. The Attempt at a Solution given the values I calculated that: Using chain rule: dx = -sintdt...

Homework Statement Using the Z transform method, solve the difference equation: f(k+1)-3f(k)=0, f(0)=4 Homework Equations Z transform first shift thereom The Attempt at a Solution F(z)-4z-3F(z)=0 zF(z)-3F(z)=4z F(z)*(z-3)=4z 4z/(z- 3) = f(z) F(k) = 4 * 3^k...