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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 cylindrical pressure tank has internal dimensions of 14.0 inches diameter, and 36 inches length from end to end. Max. recommended pressure at 70degF is 200 PSI. The cylinder has a safety relief valve which is set at 250 PSI.
A 32000 lb airplane lands on an aircraft carrier and is caught by an arresting cable. The cable is inextensible and is paid out at A and B from mechanisms located below deck and consisting of pistons moving in long oil-filled cylinders.
A sphere L ft in diameter is moving horizontally at a depth of 12 ft below a water surface where the water temperature is 50°F. v max = 1.5 V0. where V0. is the free stream velocity and occurs at the maximum sphere width.
What is the minimum energy necessary (in kJ) to compress 1.0 kg of saturated water vapor at 1 bar to a pressure of 60 bar in a perfectly insulated vessel
Input parameters for the function should be the lower and upper bounds of the root. Obtain reasonable values for the lower and upper bounds by graphing the function in Excel. Turn in your code for the VBA function.
What is the relation between reflection and transmission coeffients of a sea wall
On average each student produces 1 kg of carbon dioxide per day. The recommended ventilation rate of fresh air to avoid excessive carbon dioxide buildup is 8 L per second per student.
A Riehle Impact Testing Machine was used to break the specemins and the reading gave 68ft/lb, 66ft/lb, 64ft/lb, 69ft/lb and 63ft/lb. The cross section dimensions of the Charpy were measured to be 0.320in and 0.397in.
Air (m=28.97kg/kmol) is uniformly heated at steady state as it flows through a cylindrical constant area duct. It enters the channel uniformly at 2.5atm, 300K and 80m/s and exits at 1.5atm.
A consolidated-undrained type of test is performed. The sample fails (shears) when the total all-around confirming pressure is 45 kpa and the total axial pressure is 97 kpa.
A small house is built in the arctic. It has four square walls of 500 ft2 each. For simplicity, we will assume it has no windows, and we are only interested in calculation the heat loss through the four walls. A total of one hundred Watts (100 kW)..
If an additional 11ft lane is added (each direction) and all other factors stay the same, what will be the new level of service?
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