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The composite beam shown in the figure is simply supported and carries a total uniform load of 50 kN/m on a span length of 4.0 m. The beam is built of a wood member having cross-sectional dimensions 150 mm ×250 mm and two steel plates of cross-sectional dimensions 50 mm ×150 mm
Determine the maximum stresses ss and sw in the steel and wood, respectively, if the moduli of elasticity are Es= 209 GPa and Ew= 11 GPa. (Disregard the weight of the beam.)
determine the shortest time possible for the rear wheel drive 2 mg truck to achieve a speed of 16 ms with a constant
Determine (a) the ratio of the mass flow rates of the two streams and (b) the rate of exergy destruction, in Btu per lb of steam entering the heat exchanger.
Calculate the tension in the nail and the magnitude A of the force exerted by the hammer head on the block. The contacting surfaces at A are sufficiently rough to prevent slipping.
a machine part of mass 1.95 kg vibrates in a viscous medium. determine the damping coefficient when a harmonic exciting
two rigid tanks that are each 20 ft3 are connected by a line containing a control valve that is initially closed. tank
Compute the theoretical density of CaF2, which has the fluorite structure. Ionic radii of Ca2+ and F- are 0.100 nm and 0.133 nm respectively.
A piston-cylinder assembly contains 1 lb of Refrigerant 134a initially as saturated vapor at 10°F. The refrigerant is compressed adiabatically to a final volume of 0.8 ft3. Determine if it is possible for the pressure of the refrigerant at the fi..
a disk has a mass of 4kg and a radius of 90mm, it is at rest when it is placed in contact with the belt, which moves with a constat speed (v =15m/s). knowing that friction is .25 between the disk and the belt. Determine the number of revolution by..
---a heat engine operates between two heat reservoirs with temperature of 560 and 280 k. the thermal efficiency of the
a gas contained in a piston cylinder assembly undergoes a process from state 1 to state 2 defined by the following
The final pressure is 5 kpa . If specific internal energy of the gas decreases by 40 kj/kg, find the heat transfer in magnitude and direction.
Assume the vessel contains 1 mole of O2when there is no dissociation. Calculate mole fraction of O2 and O for the following conditions. Comment on how pressure and temperature impacts equilibrium composition and if the changes are consistent with Pri..
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