What Is the maximum velocity with which alcohol density 0.8gm/cc and coefficient of viscosity 0.012 poise can flow through a tube of 1 mm radius without turbulent being produced? R=1000

Compute the terminal velocity of rain drop of radius 0.3 mm take coefficient of viscosity of air= 1.83xx10^(-5) poise and density of air 1.3 kg m^(-3) Density of water= 10^3 kg m^(-3) and g =9.8m s^(-2)

At what maximum speed a racing car can travel through unbanked curve of radius 50m?The coefficient of friction between tyres of car and road surface is 0.5

Young's modulus of the material of a wire is 9.8 x 10^10 N/m^2 and the area of cross-section of the wire is 0.012 cm^2 . Elastic limit of the material of the wire is exceeded when the strain exceeds 1/2400 . Find the maximum load that can be used to stretch the wire without causing a permanent set.

an air bubble of radius 1mm is allowed to rise through a long cylindrical column of a viscous liquid and travels at a steady rate of 2.1cm/s if the density of the liquid is 1.47gm/cc find its viscosity. Assume g=980cm/ s^2 and neglect the density of air.