Atruncated solid cone is of circular cross section, and its diameter is related to the axial coordinate by an expression of the form d=ax3/2 , where a= 1.0 m-1/2. the sides are well insulated, while the top surface of the cone at x1 is maintained at t1 and the bottom surface at x2 is maintained at t2 . what is the rate of heat transfer across the cone if it is constructed of pure aluminum with x1= 0.075 m, t1= 135°c, x2= 0.225 m, and t2= 20°c? evaluate the properties of aluminum at t¯= 333 k

Avolume of 2.65 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 264 k, 5.6 bar. the air receives 432 kj by work from the paddle wheel. assuming the ideal gas model with cv = 0.71 kj/kg • k, determine for the air the amount of entropy produced, in kj/k

What are the major differences between injection molding and extrusion?

At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2