A spherical drop of oil falls at a constant speed of 4cm/s in steady air. Calculate the radius of the drop. The density of the oil is "0.9g/cm^(3)," density of air is "1.0g/cm^(3)" and the coefficient of viscosity of air is "1.8times10^(-4)" poise.(use "g=980cm/s^(2))

Calculate the terminal velocity of a water drop of radius 0.002 mm falling in air. Density of air =1.3" kg/m"^(3) . Density of water =10^3 "kg/m"^(3). Coefficient of viscosity of air is 1.7 xx 10^(-5)" decapoise."

The density of a liquid at 100^(@)C is 8.0g//cm^(3) and at 0^(@)C is 8.4g//cm^(3) , the coefficient of cubical expansion of the liquid is

A cubical block of wood 10 cm on a side, floats at the interface of oil and water as shown in figure. The density of oil is 0.6 g cm^(-3) and density of water is 1 g cm^(-3) . The mass of the block is

The terminal velocity of a water drop of radius 0.01 mm falling through air is 1.12 cm/s. If the density of air is neglected, the coefficient of viscosity of air is [density of water =10^(3) kg//m^(3), g=9.8m//s^(2)]

The density of copper is 8.9g//cm^(3) . Calculate the relative density of copper. (Given, density of water =1.0g//cm^(3) ).

A charged oil dop falls 4.0 mm in 16.0 s at constant speed in air in the absence of an electric field. The relative density of oil is 0.80, that of air is 1.3 xx 10^(-3) and the viscosityf of air is 1.8 xx 10^(-5) Ns m^(-2) . Find (i) the radius of the drop (ii) the mass of the drop. (iii) If the drop carries one electronic unit of charge and is an electric field of 2000 V cm^(-1) , what is the ratio of the force of the electric field on the drop to its weight ?

An air bubble of 1 cm radius is rising at a steady rate of 2.00ms^-1 through a liquid of density 1.5gcm^-3 . Neglect density of air. If g=1000cms^-2 , then the coeffieciet of viscosity of the liquid is

The density of wathr at 0^C is 0.998 g cm^(-3) at 4^C is 1.00 g cm^(-3) . Calculate the average coefficient of volume expansion of water in th etemperature range 0 to 4^C .

A body weight 20 N in water and 30 N in air. Find the density of the body. Take the density of water as 1.0 g cm^(-3) .