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A buoy is a solid cylinder 0.3 m in diameter and 1.2 m long. It is made of a material with a specific weight of 7.9 kN /m3. If it floats upright, how much of its length is above the water?
For the position shown in the figure, determine the orientation of the neutral axis and calculate the maximum tensile stress σt and maximum compressive stress σc in the beam. Assume that θ= 30° and M = 30 k-in.
Assume disturbance torques are zero and spacecraft moment of inertia is 400 kg.m2
Do this by assuming uniaxial tension along [110] and expressing σ 1, σ 2,.. .,τ 12 in terms of σ [110]. Then use the matrix of elastic constants to ?nd e1, e2, . . .,γ 12, and ?nally resolve these strains onto the [110] axis to ?nd e[110].
Please find the stoichiometric air/fuel ratio of benzene (C6H6) and the actual air fuel ratio when operated at equivalance ratio of 0.8.
a square-threaded power screw with single thread is used to raise a load of 25000lb. the screw has a mean diameter of 1
the heat-transfer rate to the surroundings from a person at rest is about 100w. supposed the ventilation system fails
the pressure in an automobile tire depends on the temperature of the air in the tire. when the air temperature is 25
a heat engine absorbs 25 mw from a 400 degree c combustion change and rejects 15 mw to the atmosphere at 30 degrees c.
A refrigeration cycle has a coefficient of performance equal to 75% of the value for a reversible refrigeration cycle operating between cold and hot reservoirs at 258C and 408C, respectively.
Ecological footprints measure humankind's demands on nature. Using the Internet, estimate the amount of land and water needed annually to support your con- sumption of goods and services and to absorb your wastes. Prepare a memorandum reporting yo..
If after 49.5 h the concentration of carbon is 0.35 wt% at a position 4.0 mm below the surface, determine the temperature at which the treatment was carried out.
Explain why Boehm's spiral model is an adaptable model that can support both change avoidance and change tolerance activities. In practice, this model has not been widely used. Suggest why this might be the case.
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