Find the viscous drag between the two liquid layers each of area 100 `cm^(2)`, and having relative velocity 8 cm `s^(-1)`. The viscosity of the liquid is 0.004 PI and the layers are separated by a distance 4 cm.

What is the viscous force on the drop of liquid of radius 0.2 mm moving with a constant velocity 4cm s^(-1) throught a medium of viscosity 1.8xx10^(-5) Nm^(-2) s .

Calculate the viscous force on a liquid drop of radius 0.3 mm moving with a velocity of 5 cms^(-1) through a medium of viscosity 2 xx 10^(-5) Nm^(-2)s.

Two parallel layers of water are moving with a relative velocity of 10 cm/s. What will be the velocity gradient if the perpendicular distance between the layers is 0.2 cm.

What is the force due to viscosity acting on a layer of water of area 4xx10^(-2)m^2 , if the relative velocity between the two layers of water, separated by 0.4 mm is 5 cm/s ? The coefficient of viscosity of water = 0.01 poise.[1 poise=0.1 Ns//m^2 ]

Two glass plates each of length 16 cm and breadth 8 cm move parallel to each other in water with a relative velocity of 6 cm s^(-1) . If the viscous force is 175 xx 10^(-5) N, what is their distance of separation ? (Given eta_("water") = 0.001 PI)

Two glass plates each of length 16 cm and breadth 8 cm move parallel to each other in water with a relative velocity of 6 cm s^(-1) . If the viscous force is 175 xx 10^(-5) N, what is their distance of separation ? (Given eta_("water") = 0.001 PI)

A test tube floats to a depth 4 cm in water and to a depth 8 cm in a liquid. The relative density of the liquid is _____.

An incompressible liquid flows through a uniform cross section tube with velocity 12 cm/s. the thickness of liquid layer is 0.8 cm then velocity of gradient of flow is

An incompressible liquid flows through a uniform cross section tube with velocity 12 cm/s. the thickness of liquid layer is 0.8 cm then velocity of gradient of flow is

An air bubble of diameter 2 cm is allowed to rise through a long cylindrical column of viscous liquid and travels at the rate of 0.21 cm s^(-1) . If the density of the liquid is 1.47 g cm^(-3) . find the coefficient of viscosity. Density of air is neglected.