Use the TF Method to determine if the following argument is valid or invalid.  Create a proof or counterexample chart in the next question.

As a plate becomes more rectangular than square, the two-way action increases and a one-way system spanning the shorter direction develops because the shorter plate strips are stiffer and carry a lesser portion of the load. (1 pt)

A cuddly 3 kg puppy needs to be started on a 250 mL bag of fluids at a rate of 10 mL/hr.  He needs his little bag of fluids infused with a drug at 0.5 mg/kg/hr.  The drugs comes in 2 mg/mL .   What is his hourly CRI rate? [cri] How many hours will his bag last? [b] What volume will be added to this bag? [v]

    What volume is this medicine drawn to?

What type of point defects would you expect to form in Non-stoichiometric Wustite (FeO) where some of the Fe2+ ions are replaced by Fe3+ ions?

What is the concentration of Pb in atom % of a PbSn alloy that is 5.5 weight % Pb?

Calculate the equilibrium number of vacancies in the cubic meter of Ag at 700 ̊C. The vacancy formation energy is 1.1 eV/atom and there are 5.78 x 1028 atomic sites in 1 m3 of Ag.

 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.