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A hemispherical droplet of liquid water, lying on a flat surface, evaporates by molecular diffusion through still air surrounding the droplet. The droplet initially has a radius R. As the liquid water slowly evaporates, the droplet shrinks slowly with time, but the flux of the water vapor is at a nominal steady state. The temperature of the droplet and the surrounding still air are kept constant. The air contains water vapor at a infinitely long distance from the droplet's surface.
What is the simplified differential form of Fick's equation for water vapor (species A)?
Determine the thickness of the 1.09m inside diameter pilot sphere (assume 4130 steel with ultimate tensile strength of 1,234MPa and a 200% factor of safety). The depth at which the sphere will fall is 10,908 meters.
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an adiabatic steam turbine operates at steady state with inlet conditions p1500 kpa t1360 c steam leaves the turbine at
a steel plate with dimensions shown below is subjected to 150 kn tensile force and 300 n-m bending moment. the plate is
a syringe has diameter d 4 cm and its piston is pressed with the force f 30 n. find the maximum velocity of the water
Molten sodium metal is often used as a coolant in nuclear reactors. Consider molten sodium at 205 C flowing at a rate of 0.23 m/s over a plate with length and width of 1 m and 2 m, respectively.
a 0.1 m3 rigid cylinder contains saturated water vapor at 100kpa. a pipe with super heated steam at 1mpa 300 degree c
an axially loaded brass strut hinged at both ends is 1m long and is of a square cross-section of sides 20mm. what
the aim of this demonstration is to use measurements of the load required to propagate a crack tear in packaging tape
Hydrogen expands isentropically from 15 bar absolute and 340 k to 3 bar absolute in a steady flow process without heat transfer. 1) compute the final velocity if the initial velocity is negligible B) compute the flow rate if the final duct size is 10..
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