An atom of molecular weight m- 50 da is confined to a solid lattice at 25 c where it "sits" in a square well potential (hard walls on both sides) of free width 0.02 nm. what is its vibration or collision frequency? check with the literature to see whether your answer is reasonable. if it is not, explain why not. answer 13-1

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f