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What Are Guidelines for System Development? System development should follow three general guidelines:
(1) group activities into phases;
(2) involve the users, which includes anyone for whom a system is being built; and
(3) define standards, which are sets of rules and procedures an organization expects employees to accept and follow.
Figure P9.17 shows two thin-walled cylinders where the top, constrained cylinder is pressed in an axial direction against the bottom, rotating cylinder.
A rigid container of 0.1 m3 and negligible heat capacity contains steam at 500 kPa and 400C. If the container is cooled, determine the pressure and temperature at which steam starts to condense. Determine also the amount of heat removed during the co..
imagine that the heart acts as a pump. blood enters the heart from the lungs at 6mm hg and leaves to the rest of the
a ship channel has a depth of 16 m and an upper width of 16 m. the sides of the channel are curved such that the width
Find the speed of the particle (relative to a fixed reference frame) at time t, and find the magnitude and direction of the acceleration.
An 80-mm × 40-mm rectangular beam is made of heat treated AISI 4340. On the tension side of the beam, a transverse crack of length 10 mm is discovered. Determine the magnitude of the bending moment M that will cause brittle fracture.
at steady state a refrigeration cycle maintains a clean room at 55degf by removing energy entering the rom by heat
consider a body of arbitrary shape. if the pressure distribution over the surface of the body is constant e.g.
A solid is deformed under plane-strain conditions (εz = 0). The strains in the x-y plane are εx = 0.010, εy = 0.005, and γ xy = 0.007. A. Sketch the Mohr's strain circle diagram.
Calculate the required ratio of the volume flow rate in the shell to that in the tube if the average velocity of flow is to be the same in each.
A counter flow condenser that is employed in a steam power plant handles 32,000 kg/hr of saturated steam at 52 °C. The cooling water enters the condenser at 17 °C and leaves at 28 °C. The tubes are 20 mm inside diameter and 27 mm outside diameter.
Water flows in the symmetrical, unfinished concrete trapezoidal channel shown in Fig. P10.77 at a rate of 120 ft3 /s. The slope is 4.2 ft/2000 ft. Determine the number of cubic yards of concrete needed to line each 1000 ft of the channel.
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