fluids

1) a drop of water of mass 0.2 g is placed between two glass plates The distance between them is 0.01 cm Find the force of attraction between the plates if surface tension of water =0.07N/m^-1

2)If p is the pressure of a gas inside the exhaust chamber of a rocket and p_o is the pressure of the gas outside the chamber The forward thrust on a rocket is .................2a(p-p_o) where a is the area of the orifice

Please give solutions to these