1.State Pascal's Law of fluid pressure.
2.State Bernoulli's Principle and write its equation.
3.State Stokes' Law for viscous force on a sphere.
4.What is surface tension? Write its SI unit and dimensional formula.
5.Find gauge pressure at depth $10 \text{ m}$ in a lake ($\rho = 1000 \text{ kg/m}^3, g = 9.8 \text{ m/s}^2$).
6.Water flows through a horizontal pipe of varying radius. At section 1, $A_1 = 10 \text{ cm}^2, v_1 = 2 \text{ m/s}$. Find velocity at section 2 where $A_2 = 5 \text{ cm}^2$.
7.Calculate terminal velocity of a raindrop of radius $0.3 \text{ mm}$ falling through air ($\eta = 1.8 \times 10^{-5} \text{ N s/m}^2, \rho_{water} = 1000$).
8.Find excess pressure inside a soap bubble of radius $2 \text{ cm}$ ($S = 0.03 \text{ N/m}$).
