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A piston-cylinder device contains 5 kg of saturated water vapor at 3 MPa. Now heat is rejected from the cylinder at constant pressure until the water vapor completely condenses so that the cylinder contains saturated liquid at 3 MPa. at the end of the process. The surrounding temperature is at 20°C. What is the entropy generation for this process?
a bucket of mass 2.0kg is whirled in a vertical circle of radius 1.1m. at the lowest point of its motion the tension in
Complex loading (bending and compression), A steel chimney is 28m high, 1.4m external diameter, and 20mm thick. It is rigidly fixed at the base and is acted upon by a horizontal wind pressure of intensity 1.
a laser is directed at a double-slit arrangement. if we increase the wavelength of the light which of the following
a tapered structural steel column with a circular cross-section varies linearly from a radius of 25 mm to 15 mm over a
the motion of a particle is defined by the equations x10t-5sint and y10-5cost where x and y are expressed in feet and t
the 3-kg slender rod rotated in a vertical plane about a pivot at b. a spring of constant k 300 nm and of unstretched
A steel tape is used to measure a distance of 20 m at a 10 0C. Assuming that the tape will measure the true distance when the temperature is 20 0C. What would be the indicated distance at 10 0C? What would be the indicated distance at 400C?
A plate, 0.001 in distant from a fixed plate, moves at 2 feet per seconds and requires a force of 0.04l bar per feet square to maintain this speed. determine the fluid viscosity of the substance between the plate.
a continuous steady state distillation column is fed a mixture that is 70 mol n-pentane and 30 mol n-hexane. feed rate
an automobile having a mass of 2000 kg deflects its suspension springs 0.02 m under static conditions. Determine the natural frecuency of the automobile in the vertical direction by assuming dumping to be negligible.
Two flat, rectangular plates with a lateral dimension w*l lie parallel, one above the other, a distance h apart. The gap between them is filled with molten polymer.
A body with a plane stress field has material properties E, ν and has the following displacement field
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