A 600 mm long sample with a square cross-section (side length 5 mm) is stretched until the side length is decreased by 0.002 mm. What is the applied force?  E=80GPa and v=0.33. Assume the deformation is elastic.

Calculate the number of Frenkel defects per cubic meter in zinc oxide at 727˚C. The energy for defect formation is 2.51 eV, while the density for ZnO is 5.55 g/cm3 at this temperature. 

Calculate the diffusion coefficient (in m2/s) for copper in aluminum at 300 oC.

Which of the following statement(s) below is false? Select all that apply.

A molten polymer is quenched (rapidly cooled), arresting the structure of the liquid in the solid polymer state. True or false: This method of processing (quenching) is a good way to make a gas barrier film.

Calculate the equilibrium number of vacancies in the cubic meter of Cu at 1200 ̊C. The vacancy formation energy is 0.9 eV/atom and there are 8 x 1028 atomic sites in 1 m3 of Cu.

A three-point bending test is performed on a cylindrical specimen (radius = 9.1 mm); the distance between support points is 45 mm. Compute the flexural strength if the load at fracture is 5560 N.

 A 300 mm long sample with a square cross-section (side length 10 mm) is stretched until the side length is decreased by 0.002 mm. What is the applied force?  E=80GPa and v=0.33. Assume the deformation is elastic.

Which of these is considered a planar defect?

The thoracocentesis was successful, with 70 mL of fluid drained from the left side and 130 mL drained from the right side. The fluid sample is packaged and awaiting courier pickup from the lab. Louie’s breathing has returned to normal, and his mucous membranes are returning to a healthy pink color. He appears to be comfortable in his oxygen cage. However, even though he appears stable at the moment, you know his status can change quickly if he develops any complications following the procedure or if the fluid builds back up in the pleural space. 7. What should you monitor in your patient to assess his respiratory function?