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A statically indeterminate truss consisting of 12 bars made of the same material and having the same cross section is shown in the figure. A vertical force P acts at joint A. By using the reciprocal-displacement theorem, determine the horizontal displacement δh of joint A.
what is the magnitude of the impulse applied to the projectile by its weight from t 0 s to 3 s? given mass of
the anode and cathode reactions for a lithium-iodide battery are shown in your textbook on page 330. note that an
A quantity of propane is contained in a piston-cylinder assembly. this working fluid undergoes a process starting from an initial state of 2.0 mpa and 60oc. at the end of the process the pressure of the propane is 1.0 mpa and the specific entropy is ..
The tungsten filament in a lamp has a diameter of 0.003 in and is 6-in long. When it is maintained at 2900K, what is the amount of energy emitted by the filament if the emissivity of the filament is 0.3? If the surroundings are at 20oC, what is the e..
A high-strength cast-iron bar 8 in. in diameter is being turned on a lathe at a depth of cut d=0.050 in. The lathe is equipped with a 15-hp electric motor and has a mechanical efficiency of 80%. The spindle is 500 rpm. Estimate the maximum feed that ..
When raised to very high temperatures, many conventional liquid fuels dissociate into hydrogen and other components. Thus the advantage of a solid oxide fuel cell is that such a device can internally reformreadily available liquid fuels into hydrog..
A steam power plant operates between the pressure limits of 4.5MPa and 15kPa. Steam enters the pump as saturated liquid and leaves the turbine as saturated vapor. Determine the ratio of the work delivered by the turbine to the work consumed by the pu..
a log with a specific gravity of 0.67 is floating in water. determine the percentage of the volume of the log that is
derive the scaling relation for the strain energy release rate of crack extension under fixed displacement. clearly
This exercise begins with information for an IT Consultant Business Startup. Working in Microsoft Project, you will create the task list, including summary tasks and their sub-tasks, create links between tasks and their predecessors, add resources..
a brass rod .002 in. in diameter and 10 in. long is loaded in tension with 800lb. assume this load is within the
Hot combustion gases enter the nozzle of a turbojet engine at 260 kPa, 747°C, and 80 m/s, and they exit at a pressure of 85 kPa. Assuming an isentropic efficiency of 92 percent and treating the combustion gases as air, determine
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