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Identify and state the historical significance of Rosa Parks.
What will be an ideal response?
College-educated black woman who refused to give up her seat to a white passenger on a Montgomery, Alabama bus. Her actions ignited the Civil Rights movement.
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Carbon dioxide extinguishers can be used on _____.
a. Class A and D fires b. Class B and C fires c. Class B and D fires d. Class D fires only
What type of heat exchanger coil is best suited for water-source heat pumps using an open-loop well system?
A) Steel B) Cast iron C) Cupronickel D) Copper
dump level ____ is used to back up all files.
A. 0 B. 1 C. 9 D. 10
Let b be the damping constant of the mounting structure of a machine as pictured in Figure P15.7. It must be determined experimentally. First, the spring constant K is determined by measuring the resultant displacement under a static load. The mass m is directly measured. Finally, the damping ratio ? is measured using an impact test. The damping constant is given by If the allowable levels of error in the measurements of K, m, and ? are±5 percent, ±2 percent, and ±10 percent, respectively, estimate a percentage error limit for b.
