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1. At 60°C the surface tension of water is 0.0662 N/m and that of mercury is 0.47 N/m. Determine the capillary height changes in these two fluids when they are in contact with air in a glass tube of diameter 0.55 mm. Contact angles are 0° for water and 130° for mercury.
2. Determine the diameter of the glass tube necessary to keep the capillary-height change of water at 30°C less than 1 mm.
What range of values of the parameters and p is the system stable - Determine the value of K so that the closed-loop system is stable and has a critically damped response
a flat plate is sliding at a constant velocity of 5 ms on a large horizontal table. a thin layer of oil of absolute
A rocket nozzle has a chamber pressure of 20 Bar (2 MPa) and a chamber temperature of 2750 K. The rocket is designed to operate isentropically at 12,500 m altitude. Note that the pressure at 12,500 m can be estimated using this equation P/P0 = exp [-..
in a rigid tank water is heated by a benson burner while being stirred by a paddle wheel. initially the internal energy
What is the maximum shear stress τmax in the wall of the tank?
In problem 6.12, what would be the manufacturing lead time if the second machine could not be set up until the setup on the first machine was completed? Would there be any reduction in manufacturing lead time?
Find the volume rate of ?ow in AB, the velocity in BC, the velocity in CD and the diameter of CE.
Friction between the piston and the cylinder wall can be neglected. For the air, determine the initial and final pressures, in kPa, and the work, in kJ.
Determine the orientation of the neutral axis and calculate the maximum tensile stress σt and maximum compressive stress σc in the beam. Use the following numerical data: height h= 200 mm, width b 90 mm, constant thickness t = 15 mm, and θp= 19.2°..
a removable bracket must be attached to the frame of a machine tool as a support. the need for interchangeability
argon is compressed in a polytropic process with n 1.2 from 120 kpa and 30ordmc to 1200 kpa in a piston-cylinder
The sensor housing is mounted on a stationary platform, such as the support structure of the system being monitored. A spring motor winds the cable back as the cable retracts. Using suitable sketches, describe the operation of this displacement se..
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