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A plastic-lined steel pipe has the cross-sectional shape shown in the figure. The steel pipe has outer diameter d3= 100 mm and inner diameter d2= 94 mm. The plastic liner has inner diameter d1= 82 mm. The modulus of elasticity of the steel is 75 times the modulus of the plastic.
Determine the allowable bending moment Mallow if the allowable stress in the steel is 35 MPa and in the plastic is 600 kPa.
a tank has a stirrer that delivers 200 kj of work on 100 kilograms of water at 45 degrees celcus. assume all of the
a particular coal has the following mass analysis inert ash 10 percent nitrogen 2 percent oxygen 12 percent sulfur 1
assume that a person is on a roof and that the structure has a circular cross section. if the interface is frictionless
The tensile strengths of brazed joints between two pieces of steel are often con- siderably higher than the tensile strength of the braze material itself. Furthermore, the strengths of thin joints are higher than those of thick joints. Explain.
In atmospheric studies the motion of the earth's atmosphere can sometimes be modeled with the equation →V/Dt+2→Ω x →V = -1/ρ∇p, where →V is the large-scale velocity of the atmosphere across the earth's surface, ∇p is the climatic pressure gradient, a..
calculate the overall efficiency the heat rate mw and the total fuel rate kgs of a combined-cycle power plant 1 if no
determine the work done in lifting a 250-lb refrigerator 4 ft vertically into a van. alternatively the refrigerator
Estimate the yielding stress of your blutack using a circular cross-section sample and weights/scales. Report three measurements.
a 50 kg crate rests on a rough horizontal surface with microk0.3. an electrically powered winch is utilize to
Determine the position of the neutral axis relative to the bottom face - dimensions of a 6 m long asymmetric I-beam are shown. Determine the position of the neutral axis relative to the bottom face
a stone of mass m is tied to one end of a string ans is rotated with constant angular vel. w. the length of the string
estimate the average electrical drift velocity in cms for a flat plate esp with a total collector area equal to 10000
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