Question

6. What is drag and drag coefficient?

7. What are the five basic methods of generating super saturation?

8. Name the three forces that act on a particle moving through a fluid.

9. Mention how a form drag can be minimised?

10.List any four factors that influences settling rate of particle in a liquid. ​

Answer 1

Answer:

Ans 6 in fluid dynamics the drag coefficient commonly denoted as or is a dimensionless quantity that is used to quantify the drag aur resistance of an object in a fluid environment such as

Ans 7 supersaturation is a solution that contains more of the dissolved material then could be resolved by the solvent under normal circumstances it can also refer to a vapour of a compound that has a higher Patil pressure than the vapour pressure of that compound

Ans 8 there are three forces acting on an object falling through which cause fluid its weight w viscous drag FB and the buoyant force FB

Ans 9 the fluid friction or drug can be reduced are minimised by giving special shape called is streamlined shape to the objects which moves through fluids like air water for example one ka are built with streamlined body shape to reduce their resistance or drug caused by air

Ans 10 density and concentration and fluid viscosity other less obvious factors affect the sedimentation rate these include particle shape and orientation convection currents in the surrounding fluid and chemical pretreatment of the speed suspension

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