Answer the following statement(s) true (T) or false (F)
1. Something that weighs one pound and has a footprint of one square inch will exert two pounds per square inch of pressure on whatever it sits on.
2. Metal distributes stresses, like weight or bolt plate pressures, pretty evenly across itself.
3. In AFC systems, the anode reaction is 4H2 + 2OH- ? 4H2O 1 4e.
4. Parasitic losses can run up to 20% of rated output.
5. Potential is measured as follows: volts equal amps times resistance (V = IR).
1. False
2. true
3. False
4. True
5. True
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Answer the following statements true (T) or false (F)
1. In a suspended ceiling system, steel hanger wires are supplied by the manufacturer already cut to length. 2. The strongest metal suspension system is always a properly installed direct-hung system. 3. It is not possible to use lath and plaster with a suspended ceiling structure. 4. Ceiling materials are essentially limited to drywall, lath and plaster, and acoustical tiles.
This steel is cast with little or no degasification and is used for sheets, strips, rods, and wires with excellent surface finish.
a. killed steel b. normalized steel c. rimmed steel d. carburized
Where is the correct location for a sight glass in order to check the charge?
What will be an ideal response?
The Beer-Lambert law relates the absorbance A of a solution to the concentration C of a species in solution by A = MLC, where L is the path length and M is the molar absorption coefficient. Assume that C = 1.25 ± 0.03 
L = 1.2 ± 0.1 cm, and A = 1.30 ±0.05.
a. Estimate M and find the uncertainty in the estimate.
b. Which would provide a greater reduction in the uncertainty in M: reducing the uncertainty in C to 0.01 
reducing the uncertainty in L to 0.05 cm, or reducing the uncertainty in A to 0.01?