What do the average velocity V avg and the mean temperature T m represent in flow through circular tubes of constant diameter?
What will be an ideal response?
In fluid flow, it is convenient to work with an average or mean velocity V avg and an average or mean temperature T m whichremain constant in incompressible flow when the cross-sectional area of the tube is constant. The V avg and T m represent the velocity and temperature, respectively, at a cross section if all the particles were at the same velocity and temperature.
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Jay's Treaty contained all of the following provisions EXCEPT
A. a British promise to evacuate its chain of forts on U.S. soil. B. British consent to pay damages for the recent seizure of American ships. C. that Americans were bound to pay debts still owed to British merchants on pre-Revolutionary accounts. D. no promise by the British to pay for future seizure of American ships. E. a promise by the British to stop selling arms to the Indians.
Air occupies a balloon that has an initial volume of 0.05 m3. Initially, the air has a temperature of 20oC and a pressure of 125 kPa. The air is heated, and the balloon expands until the volume of 0.25 m3. The pressure and volume are related through pVn = constant. Develop a computer program model for analyzing such a process/device. Plot the final temperature of the air, the work done, and the heat transfer for values of n = 1.1, 1.2, 1.3, 1.4, and 1.5.
Given: Air; T1 = 20oC = 293 K; P1 = 1000 kPa; V1 = 0.05 m3; V2 = 0.25 m3; PVn = constant Assume: ?KE = ?PE = 0. The air is an ideal gas with constant specific heats (cv = 0.718 kJ/kg-K; R = 0.287 kJ/kg-K) What will be an ideal response?
Which safety device is used on vehicles with manual transmissions?
A) Neutral safety switch B) Clutch safety switch C) Both A and B D) Neither A nor B
Plot the magnitude and phase Bode diagrams of the transfer function given by
