10. A steel cable holds a 120-kg shark tank 3 meters below the surface of saltwater. If the volume of water displaced by the shark tank is 0.1 m', what is the tension in the cable? Assume the density of saltwater is 1025 kg/m. 11. A rectangular boat made out of concrete with a mass of 3000 kg floats on a freshwater lake (p=1000 kg/m). If the bottom area of the boat is 6 m, how much of the boat is submerged? 12. A diver's pressure gauge reads 250,000 Pascals in fresh water (p=1000 kg/m). How deep is the diver? 13. A hydraulic system is used to lift a 2000-kg vehicle in an auto garage. If the vehicle sits on a piston of area 0.5 square meter, and a force is applied to a piston of area 0.03 square meters, what is the minimum force that must be applied to lift the vehicle? II