Carbon dioxide at 2 atm and 25°C is stored in a cylinder with a flat, circular plug stopper of vulcanized rubber, 3 cm thick and 2 cm2 in area. Experimental data at 25°C give the solubility of CO2 in rubber as 0.90 cm3 (at 0°C and 1 atm )/cm3 of rubber/atm CO2 and the diffusivity of CO2 in rubber at 0.11 × 10−5 cm2/s , independent of pressure. Neglecting mass transfer resistances in the gas on either side of the stopper and a pressure of 1 atm outside of the cylinder, calculate rate of loss of CO2 from the cylinder in mol/s.

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.