Chapter 14, Problem 41P

(a)

To determine

The terminal speed of the protein of radius $3.0\times {10}^{-9}\text{ m}$, when it falls through a tube of water with viscosity $1.0\times {10}^{-3}\text{ N}\cdot {\text{s/m}}^2$ and under a constant downward force of $3.0\times {10}^{-22}\text{ N}$ exerted by earth, assuming no buoyant forces are acting on it.

(b)

To determine

The time, in hours, required for the protein of radius $3.0\times {10}^{-9}\text{ m}$, when it falls $0.10\text{ m}$ through a tube of water with viscosity $1.0\times {10}^{-3}\text{ N}\cdot {\text{s/m}}^2$ and under a constant downward force of $3.0\times {10}^{-22}\text{ N}$ exerted by the earth, assuming no buoyant forces are acting on it.