Calculate the number of chains in a 5 m-long PVC pipe with an inner diameter 5 cm and a thickness of 0.5 cm if the degree of polymerization in 1000. Assume that the chains are equal in length. The density of PVC is 1.4 g/cm3. The molecular weight of PVC monomer is (2 C atoms)(12 g/mol) (3 H atoms)(1 g/mol) (1 Cl atom)(35.5 g/mol)

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

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

What is the direction and how to operate the lathe?