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1. Define a use case and a use case diagram, and prepare a sample of each.
2. Define the term black box, and explain why it is an important concept in object-oriented analysis. Can you think of other black boxes that you use in everyday life?
A 1 foot long cylindrical rod with a diameter of 0.25 inch is subjected to a tensile load of 1,500 lbs. Suppose the rod was elongated 0.01 inch under this load, what is the stress and strain created by the load? What is the Young’s Modulus of the mat..
Determine the internal resisting torque in the shaft shown at A, B, and C. Show the free-body diagrams.
a fire hose nozzle has a diameter of 1.500 in. according to some fire codes the nozzle must be capable of delivering at
Assess efforts by this corporation to be a responsible (ethical) corporate citizen and determine the impact these efforts (or lack thereof) have on the company's bottom line. Provide specific examples to support your response.
Two-tenths of a pound of air at 2 atm and 540 degrees R is trapped within a syringe by a plunger at one end and a stopcock at the other, a shown in Fig. P4.103. The stopcock is opened and the plunger moved to inject the trapped air into a container t..
an ideal diesel cycle with a compression ratio of 17 and a cut off ratio of 2 has a temperature of 105 fahrenheit and a
Derive an expression for the heat-loss conductance Uc for a flat-plate collector in which convection and conductance are completely eliminated in the air layers by use of a hard vacuum.
consider a carnot power cycle running with 2 kg of water as an operating fluid. during the isothermal expansion the
Determine the half-range cosine series expansion of the function f (t) = 2t - 1, valid for 0 t 1.
A uniform solid circular cylinder of density 0.5p floats in a liquid of density p with its axis upright. The radius and height of the cylinder are R and 2R, respectively. Determine the mecacentric height and analyze the static stability of the floati..
an automobile wheel test rig consists og a uniform disk a of mass ma 5500 kg and radius ra1.5 m that can rotate freely
A 4 kW motor is driving an oil pump with an efficiency of 95% down a 10 mm diameter pipe. If the velocity of the fluid downs the pipe is 1.8 m/s, What is the flow rate that the pump delivers? What is the pressure that the pump can deliver?
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