A pressure gauge was attached to a flask filled with carbon dioxide under a slight overpressure. The gas was then discharged through a small hole, the time taken for the

pressure to drop from 75 cm to 50 cm was 52.65 seconds. When the experiment was

repeated with nitrogen (M = 28 g/mol), the same pressure drop was observed after 42

seconds. the molar mass of carbon dioxide

Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)

Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false