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1. Calculate the critical Euler buckling stress for a W 12 x 40 steel column 24 ft in length with a modulus of elasticity of 3 x 107 psi.
2. Using the Euler formula, calculate the critical load of a 1.5-in. diameter steel rod 3 ft long used as a compression member. Assume end conditions are pinned- connected and the modulus of elasticity is 3 x 107 psi.
air expands through a turbine operating at steady state on an instrumented test stand. at the inlet p1 160 lbfin2 t1
A wheelof radius 10 cm can rotate freely about its center as shown in figure. A string is wrapped over its rim and is pulled by a force of 5.0 N. It is found that the torque produces an angular acceleration 2.0 rad/s2 in the wheel. Calculate the m..
an engine uses methanol ch3oh as a fuel with 300 excess air. air enters the engine at 1 bar and 25 c and is mixed with
Calculate the number of vacancies per cubic meter in gold at 900°C. The energy for vacancy formation is 0.98 eV/atom. Furthermore, the density and atomic weight for Au are 18.63 g/cm3 (at 900°C) and 196.9 g/mol, respectively.
If quenching is to occur until the surface temperature of the balls reaches 100°C, how long must the balls be kept in the oil? What is the center temperature at the conclusion of the cooling period?
Resolve the problem below with the vertical edges constrained from displacing in x direction, but free to displace vertically. Determine the vertical displacement of the top edge and the stresses required to prevent the vertical edges from displacing..
what is the definition of the prandtl number? how does its value affect relative growth of the velocity and thermal
Describe in detail - using hand drawn imagery and text, describe the information required to be detailed in a site plan. analysis describe the process to assess a buildings exposure to wind loads and what forms of bracing are used to counteract thes..
a person cooks a meal in a 30-cm-diameter pot that is covered with a well-fitting lid and lets the food cool to the
the anode and cathode reactions for a lithium-iodide battery are shown in your textbook on page 330. note that an
a tank of 0.5 m3 volume contains compressed air. a valve is opened and air escapes with a velocity of 300 ms through an
Methane is completely burned with 20% excess air, with 30% of the carbon going to CO. What is the partial pressure of the CO in the stack gas if the barometer reads 740 mm Hg, the temperature of the stack gas is 300°F
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