Andrade’s equation has been proposed as a model of the effect of temperature on viscosity: μ = DeB∕Ta where μ = dynamic viscosity of water (10–3 N·s/m2), Ta = absolute temperature (K), and D and B are parameters. Fit this model to the following data for water: T 0 5 10 20 30 40 μ 1.787 1.519 1.307 1.002 0.7975 0.6529

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation

Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1