What type of a system typically has high channel density and high bit rate, is highly reliable, incorporates redundant equipment, and involves extensive engineering studies?
A. LANs
B. Long-haul
C. MANs
D. WANs
B
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What mixture concentricity of propylene glycol to water provides maximum antifreeze protection?
A. 100 percent B. 60 percent C. 30 percent D. 20 percent
A copper roof is being installed on a 300 ft tall building. A copper tile is dropped, and falls to the ground. Assume that there is no air resistance, and that the temperature of the copper tile stays constant (at 80oF) during its fall to the ground. When the copper tile hits the ground, all of its kinetic energy is converted into thermal energy, with no heat lost in the process. What is the temperature of the copper tile after it comes to rest on the ground?
Given: Cu; T1 = 80oF; z1 = 300 ft; z2 = 0 m Assume: Q = W = ?KE = 0 (the initial and final velocities are both 0 – the energy change in the fall is potential energy); The copper is an incompressible substance with constant specific heats: c = 0.092 Btu/lbm-R What will be an ideal response?
Cattle guards near the main road are a good idea if there are problems with trespassing and vandalism
in the area.
Indicate whether the statement is true or false.? Identify and state the historical significance of Dwight Lyman Moody.
What will be an ideal response?