Question

Coefficient of viscosity procedure bhej do

Answer 1

✨⭐✌Here is the answer✌⭐✨

✨⭐Coefficient of viscosity is Newton-second per square metre ( It is equivalent to Pascal - seconds. Its dimensional formula is. Its SI unit is also termed as 'deca-poise' and CGS unit is 'poise' .Coefficient of viscosity. noun. pl. coefficients of viscosity. The degree to which a fluid resists flow under an applied force, measured by the tangential friction force per unit area divided by the velocity gradient under conditions of streamline flow.⭐✨

✨⭐✌hope it helps✌⭐✨

Answer 2

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The ratio of the shearing stress to the velocity gradient is a measure of the viscosity of the fluid and is called the coefficient of viscosity η, or η= Fx / Av. The cgs unit for measuring the coefficient of viscosity is the poise. Experiments have shown that the coefficient of viscosity of liquids decreases with increasing temperature, while the coefficient of viscosity of gases increases with increasing temperature. In liquids an increase in temperature is associated with the weakening of bonds between molecules; since these bonds contribute to viscosity, the coefficient is decreased. On the other hand, intermolecular forces in gases are not as important a factor in viscosity as collisions between the molecules, and an increase in temperature increases the number of collisions, thus increasing the coefficient of viscosity. A striking result of the kinetic theory of gases is that the viscosity of a gas is independent of the density of a gas. Viscosity is the principal factor resisting motion in laminar flow. However, when the velocity has increased to the point at which the flow becomes turbulent, pressure differences resulting from eddy currents rather than viscosity provide the major resistance to motion.