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A cylindrical graphite (pure carbon) rod of length 25 cm and initial diameter of 2 cm is inserted into a flowing air stream at 100 K and 2 atm total pressure. The flowing gas creates a stagnant gas boundary layer of 5 mm thickness around the external surface of the rod. How long it will take for the rod to disappear? Partial pressures are, PoA1= 0.5 atm and PoA2= 0 atm. The density of solid graphite is 2.25 g/cm3. Molecular weight of graphite is 12 g/mol. Assume pseudo-steady state and equimolar counter diffusion.
an inverted conical container 26 in in diameter and 44 in high is filled with a liquid at 20degreesc. the liquid weight
the revolving joint type v of an industrial robot has a range of 240? rotation. the mechanical errors in the joint and
an ideal gas of mass 2 kg is contained within a rigid cylinder and undergoes a cycle which consists of three separate
a rocket is launched from the ground in vertical direction. but its engine failed at the moment the rocket has reached
Determine the scalar component of the moment at point 0 about line OB and the reaction at 0 - average normal and shear stresses on plane BB.
consider a carnot-cycle refrigerator with ammonia as the working fluid. heat is rejected from the ammonia at 20 deg c
a 100-mm long and 20-mm diameter rod of 403-stainless steel is pulled to fracture with reported results as follows
a 0.5 m3 insulated rigid tank contains 0.4 kg of air at 100 kpa. 26 kj of work is applied to a paddle-wheel inside the
Use potential flow theory to determine the lift coefficient of a spinning baseball in terms of the forward velocity (V ) and spin RPM.
A large tower is to be supported by a series of steel wires; it is estimated that the load on each wire will be 13,300 N (3000 lbf). Determine the minimum required wire diameter, assuming a factor of safety of 2 and a yield strength of 860 MPa (12..
Why is it appropriate to take velocity measurements at several diameters downstream of the fan?
boron is diffused into highly pure germanium at 1000oc q 105 kcalmol do 1.1 x 10 m2sec. a steady surface
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