help solve part b and c plz, thanks

Spherical particle having an average particle diameter of 0.5 mm and particle density of 1600kg/m' is falling in water. Estimate the terminal velocity of the particles if the viscosity and density of water are 0.801 CP and 995.7 kg/m', respectively. (20 marks) (b) Calculate the terminal velocity of the same particle in (a) falling in another fluid having a viscosity and density of 0.008 kg/ms" and 900 kg/m', respectively. (15 marks) (c) If the terminal velocity of the particle in (b) is desired to be increased to 0.2 m/s, estimate the viscosity of the fluid assuming the particle is to fall in a Stoke's law region and the liquid maintains the same density. (10 marks) Suggest an action you can take to increase the viscosity of the fluid in this case. (5 marks) 1000 100 10 Drag coefficient, CD 24 Cp NRe - 1 0.1 10-3 10-2 10-1 100 10 102 104 105 106 103 Doup Reynolds number, NRC LL