____ is produced by the metal as it burns.
A. Carbon
B. Iron
C. Heat
D. Ash
Answer: C
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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?
Metal stairways are completely fabricated _
a. off site b. on the lower level of the building under construction c. from the top down d. on the upper level of the building under construction
A run chart is best described as:
a. a simple bar graph with classifications along the horizontal and vertical axis. The vertical axis is usually the number of occurrences, cost or time. The horizontal axis orders the bars from the most frequent to the least frequent. b. a statistical tool used to determine and control process variations. c. a picture of the activities that take place in a process. d. a graphical record of a process variable measured over time.
The parking brake chamber used with S-cam brakes is:
a. air actuated spring released b. oil actuated spring released c. spring actuated air released d. spring actuated oil released