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Orbiting spheres
Find the shortest possible period of revolution of two identical gravitating solid spheres that are in circular orbit in free space about a point midway between them. The spheres are made of platinum, density 21.5 g/cm3.
axial flow coolant pump for one lop pressurized nuclear reactor has 75 m head 6m3s flow rate 1440rpm 800 mm diameter
a 16 kg mass of copper is dropped into an insulated tank which contains water at 20oc and 1 bar. the initial
at time t0 the postion vector of a particle moving in the x-y plane is r5i m. by time t 0.02 s its position vector has
steam flows steadily through an adiabatic turbine. the inlet conditions ar 10 mpa 450 degrees c 80 ms and inlet area of
consider an air-standard otto cycle. what is the efficiency of the otto cycle if the compression ratio is 10 and the
A brass rod 1.5 cm in diameter is deformed in tension reducing its diameter to 1.128 cm. The data for brass in Fig. 7.19 will be helpful in solving this problem. If the deformation process was performed in one step, what was the yield stress of your ..
You are considering two different diffusion processes involving Carbon into FCC iron. The first process is carried out at 900 oC for 3 hours and produces a carbon concentration of 0.20 wt% at a depth of 2 mm. At what depth would this concentration oc..
A reversible heat engine operates between 397 degrees C and 7 degrees C and rejects 20 kJ/min to the environment. The total net work output of the engine is used to drive a reversible heat pump which is supplied with heat from the environment at 7 de..
a 15-hp shaft pump is used to raise water to a 45-m higher elevation.if the mechanical efficiency of the pump is 82
a thermoelectric device cools a small refrigerator and discards heat to the surroundings at 25c. the maximum electric
Rapid heating and cooling can cause cracks to start at the surface of a ceramic material. Sometimes the cracks meet the surface at 90? and sometimes at 45? to the surface.
The panel shown forms the end of a trough that is filled with water to the line AA9. Referring to Sec. 9.2, determine the depth of the point of application of the resultant of the hydrostatic forces acting on the panel (the center of pressure).
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