A turtle is standing on an incline with a force applied to it as shown. In spite of the force applied the turtle is at rest (net acceleration is zero). Draw and label the free body diagram of all the forces acting on the turtle. (1pt for each correct force, 1 point for having no mistakes.

Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.