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Question viscosity of water=1.002X10-3 Pa s; density of water =1000 kg m-3 For each of the following particles suspended in water a virus particle, 50 nm in diameter, density 1020 kg/m^3 2. a polymer particle, 1 um diameter, density 1050 kg/m^3 3. A grain of sand, 100 um diameter, density 2200 kg/m^3 Calculate calculate the terminal velocity a. b. calculate the diffusion constant estimate the time taken for the particle to diffuse a distance equal to its own diameter c