CHEM 131 Midterm: Exam 3 No Solutions Fall 1996

• School: University of Maryland
• Department: Chemistry and Biochemistry
• Course: CHEM 131
• Professor: All

Document Summary

Consider two die each with 12 faces numbered 1 to 12. A sinusoidally varying field (cid:1831)(cid:4652)(cid:1318)(cid:3404)(cid:1853)(cid:1876)(cid:3548)cos(cid:4666)(cid:1863)(cid:1876)(cid:4667) is applied to the fluid. Assume the concentration is still approximately constant: given the answer to part (b), what is the initial rate of change in concentration dc(x)/dt as a function of x, consider a random walk along the x axis. Explain: the variance in the position changes by the same amount every step. )2>=)2> +)2> where dxn is the change in x at the nth step. Use this relation and the answer to (a) to find the variance after n steps. )2>: if the time between steps is dt and the diffusion constant is defined by the relation: A cylinder of length l and radius r lies in the x-y plane at an angle to the x-axis. It"s far enough from the surface so that you can think of it as isolated. Ignore any momentum imparted to the fluid during changes in .