Use two bar elements. (a) Determine nodal displacements for the three nodes. (b) Determine the element stresses for the two elements. (c) Determine the support reaction at Node 1. Assume:

Solve the two problems on your scratch papers. After 50 mins, show your scratch papers on camera clearly (each paper for 2 seconds). Quit the honorlock, scan your scratch papers, make one PDF file, and submit the PDF file to “Quiz 3 submission” assignment. You have to upload your PDF file in 10 mins after finishing honorlock. Formulas: 1D bar element equation: 2D truss element equation:

Calculate the moles of nitrogen, N2, that is equivalent to 11.357 g N2.  Select the answer with three significant figures.

After you run a couple of experiments, you got the following results. Characteristic Organism A Organism B Cell Wall Contains peptidoglycan Contains peptidoglycan Cell Membrane Type Lipid Bilayer Lipid Bilayer Fatty Acid linkage Ester bonds Ester bonds Cell Envelope Contain Mycolic acids Contains capsule

Calculate the percent yield for the reaction if the theoretical yield is 49.51 g, and the actual yield is 38.76 g.

For the balanced chemical equation  N2  +  3 H2  —–>   2 NH3, the molar ratio for H2 and NH3 is 3 mol H21 mol NH3{“version”:”1.1″,”math”:”3 mol H21 mol NH3″}.

Which arrangement is commonly seen in organisms in the Genus Staphylococcus?

Select the symbol that represents a solution whose solvent is water.

The center (middle) of the lipid bilayer is

When conducting an experiment, Mr. Hernandez obtained 15.11 g NaHCO3 when he possibly could have obtained 20.12 g NaHCO3 .  The theoretical yield for Mr. Hernandez’s reaction is 15.11 g NaHCO3 .