What are the requirements should be taken while making sieve at home for shaking sand?

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?

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