An oil film thickness 1 mm is used for lubrication between a square plate of size 1.2m x1.2 m m and inclined angle having an angle of inclination 25 degree . the weight of the plate is 500 n and it slides down the plane with a uniform velocity of 1.8 m/s. calculate the dynamic viscosity of the oil?

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

What is the major difference between thermoplastics and thermosetting plastics from the polymerization structure point of view?

On solidification from a melt, the polymer polyethylene forms a semi-crystalline spherulite structure. (i) sketch an individual spherulite and label the amorphous and crystalline regions. (ii) draw a schematic to show the changes in specific volume with temperature during cooling from the melt, comparing it to the theoretical extremes of fully crystalline and fully amorphous (indicate tm and tg)