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A rod consisting of two cylindrical portions AB and BC is restrained at both ends. Portion AB is made of steel (E=29x10^6 psi, α=6.5x10^-6) and portion BC is made of aluminum (E=6.5x10^-6 psi, α=13.3x10^-6). Knowing that the rod is initially unstressed, determine (a) the normal stresses induced in portions AB and BC by a temperature rise of 70 degrees F, (b) the corresponding deflection of point B.
a circular aluminum tube of L=600 mm is loaded in compression by forces P. The outside and inside diameters are d2=75 mm and d1=63mm, respectively. A strain Gage is placed on the outside of the tube to measure normal strains in the longitudinal di..
What is the maximum distance away that the navigation lights can still be seen by an observer standing at the shoreline The observer's eye height is 5'6" and the uppermost navigation light is 168 above the water.
In 1800 an undeveloped country had a population of 10 million with birth and death rates of 60 and 52 per thousand per year. The situation continued until 1900, when the death rate instantaneously was reduced to 10
A PVC pipe with a diameter of 30 inches will carry a flow of 20 cfs. the bottom slope is 0.005 and the roughness coefficient is 0.015. determine the normal depth, critical depth, velocity and the froude number.
All the silt is saturated even after the water table is lowered. (In this problem, treat the unit weight above the water table as bulk unit weight and the unit weight below the water table as saturated unit weight.)
A water line to a home is usually 3⁄4" copper tube. What is the flow rate that can be delivered and still maintain laminar flow in the tube?
If r = (theta)2 and theta = 2t, find the magnitude of r dot and theta double dot when t = 2 s
If an alternative base material is available for $5,791.50 per lane-mile per inch depth, to use it, the minimum depth for asphalt has to be increase to 6 inch with no change of base and subbasedepth. What will be the total cost per lane-mile per i..
When a particle falls through the air, its initial acceleration a=g diminishes until it is zero, and thereafter it falls at a constant or terminal velocity v_f . If this variation of the acceleration can be expressed as a=(g/v^2_f)(v^2_f-v^2)
Using the stress transformation equations only,given a stress state where sigma x=105 MPa,sigma y=75 MPa and tau xy=25 MPa, determine the stresses acting on an element oriented at an angle 40 degrees from the x axis.
Straight pipe, pump head=100 ft, pipe diameter=4inches, velocity is 10 ft/sec, no elevation changes. Water at 20C. What is the length of the smooth pipe
Determine the compositions and quantities of gas and liquid when 1 lb mole of a mixture of 30 mole percent methane and 70 mole percent ethanol is brought to equilibrium at 0 F and 500 psia.
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