Molecular flux-thermodynamic kinetics

AI Thread Summary
The discussion focuses on a problem involving molecular flux and thermodynamic kinetics, where a partition divides a volume containing N atoms. The goal is to derive an expression for the number of atoms on each side of the partition over time after a hole is created. The initial solution proposed was N = Noe^(vAt/4V), but it was indicated that this is incorrect as t approaches infinity. Additionally, the impact of having free space on the right side of the partition is questioned, suggesting that the dynamics of atom distribution would change. The conversation emphasizes the importance of accurately applying the equations of molecular flux in thermodynamic scenarios.
oxman
Messages
19
Reaction score
0
Molecular flux--thermodynamic kinetics

Homework Statement



A volume is divided into two equal parts by a partition. The left volume has N atoms. The atoms have a mass m. A hole of area A is made in the partition at time t=0

A)Develop an expression for the number of white atoms on each side of the partition at time t.
B)Check your answer when t-->infinity and when t-->0
C) If the right volume is just free space how is your answer changed?



Homework Equations



\Phi=\Delta/\DeltaA
*\Deltat

Phi= 1/4(v)n where n=N/V

The Attempt at a Solution



i got N=Noe^(vAt/4V) my teacher says this is wrong if i take t-->infinity...im pretty sure what i solved for is correct tho...
 
Physics news on Phys.org
phi= dN/dAdt ***
 
Thread 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
Thread 'A cylinder connected to a hanged mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top