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An insulated rigid tank is divided into two equal parts by a partition. Initially, one part contains 4 kg of an ideal gas at 800 kPa and 50°C, and the other part is evacuated. The partition is now removed, and the gas expands into the entire tank. Determine the final temperature and pressure in the tank.
A 1.20-m thick strata of sand has a void ratio of 1.81. A contractor passes a vibratory roller over this extra strata, which densifies it and reduces its void ratio to 1.23. Compute its new thickness.
An automobile traveling at 30 miles per hour on level pavement with a coefficient of kinetic friction of 0.6. Weighs 3,000 lb. Sixty percent of its weight is on the front axle and 40% on the rear axle.
The portable floor crane in the automotive shop is lifting a 420 lb engine. For the position compute the magnitude of the force supported by the pin at C and the oil pressure p against the 2.70 in. diameter piston of the hydraulic cylinder unit AB..
a beryllium copper wire having diameter of 1-50 mm and length of 40mm is used as a small torsion bar in an instrument. determine what angle of twist would result in the wire when it is stressed to 250 mpa.
Draw the flow net for the steady state seepage flow which occurs under this wall. From the flow net determine the distribution of water pressure on the side AB of the wall and then find the resultant force (per metre run into the page) exerted by ..
The pins on the frame at B and C each have a diameter of 0.25 in. If these pins are subjected to double shear, determine the average shear stress in each pin.
Each exerts a force of 600 N directed at a t= 20.0° anglerelative to the forward motion of the boat. If the boat moves withconstant velocity, find the resistive force exerted by the water on the boat.
Design a simply supported one-way reinforced concrete floor slab to span 10 ft and carry a service live load of 175 psf and a service dead load of 25 psf. Use fc' = 3000 psi and fy = 60,000 psi.
A force is specified by the vector F= 120i-160j+80k lb. Calculate the angles made by F with the positive x-,y-, and z- axes.
Explain how the desert air can contain much more h 2 o vapor in the air than the pole, and still a lower humidity than the pole? what causes the difference between dry and moist lapse rate?
a stream f gas flowing at 3000 cfm has a particulate loading of 50gr/ft what is the allowable exit loading if 95 % collection efficiency is required. what is the mass of the particles collected
write a computer program and use it to calculate the bending moment under each load and at the midpoint c of the beam for values of x from 0 to 24 ft at interval delta x = 1.5ft
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