Carbon is allowed to diffuse through a steel plate 12 mm thick. the concentrations of carbon at the two faces are 0.86 and 0.40 kg c/m3 in fe, which are maintained constant. if the preexponential and activation energy are 6.2 × 10-7 m2/s and 80,000 j/mol, respectively, compute the temperature (in k) at which the diffusion flux is 6.3 × 10-10 kg/m2-s.

The two required components for a generator

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

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