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The linkage in Figure P12-9a has rectangular steel links of 20 x 10 mm cross section similar to that shown in Figure 12-1 Oa (p, 587), Design the necessary balance weights and other features necessary to completely eliminate the shaking force and shaking moment. State all assumptions.
Air at 120 kPa absolute and 30°C flows vertically upward in a pipe, as shown in Fig. P3.65. If the water manometer deflection H = 5 cm, determine the velocity in the smaller pipe. Assume the air to be incompressible.
A cylinder with a 0.3 m inner diameter and 0.4 m outer diameter is internally pressurized to 140 MPa. Determine the maximum shear stress at the outer surface of the cylinder.
A three-phase, four-wire panel board must feed 42 circuits. From tables provided in this chapter, identify the frame sizes available to meet this requirement.
(Computational problem. It would help to have a spreadsheet or a programmable calculator.) Consider a system of bosons at 290 K with µ = -0.01 eV, for which the energies of the various states are given by εm = m0.01 eV, where m = 0, 1, 2, 3,...
Calculate the average spacing between free-electron energy levels in a cube-shaped crystal of Li that is one centimetre on each edge. At what cube size will the separation between energy levels be larger than the thermal energy available to the elect..
Determine the work done by the ammonia by summing the area below the P-V process curve. As you plot it, P is the height and the change in volume is the base of a number of rectangles.
A gas turbine receives a mixture having the following molar analysis: 10% CO2, 19% H2O, 71% N2 at 720 K, 0.35 MPa and a volumetric flow rate of 3.2 m3 /s. The mixture exits the turbine at 380 K, 0.11 MPa. For adiabatic operation with negligible kinet..
This crate holding 40 bricks, each of mass 1.3kg, is placed on a hydraulic lifting beam as shown. State the order of the lever used here. Calculate the effort required to lift the load. Calculate the mechanical advantage for this system.
The lift and drag developed on a hydrofoil are to be determined through wind tunnel tests using standard air. If full scale tests are to be run, what is the required wind tunnel velocity corresponding to a hydrofoil velocity in seawater at 20 mph?..
solid carbon reacts with steam to produce carbon monoxide and hydrogen. given an hc atom ratio of 11 and an oc atom
On a single graph, plot "Hardness" as the ordinate versus "Aging Time" as the abscissa for each aging temperature - Discuss the effect of aging time and temperature on the effect of material hardness.
A hydraulic shear applies 2000 lb force to a wedge. It is used to shear plate steel to rough size. The shear has a 1/4 inch thick cutting blade with a 45 degree slope. What is the ideal mechanical advantage of the wedge?
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