The following is a set-up to determine the diffusion coefficient of a solute (A) in a liquid (B). The transfer of A is from the bottom to the top compartment. V is the volume of the compartments and they are equal, c is concentration of A, σ is the porosity of the membrane between two compartments, z is the thickness of the membrane. Derive the equation for the diffusion coefficient of A in B (DAB)

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?

In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?