QULIOL DI LUMILLI ILJ Oil 28% 10 cm (a) A cube of side length 10.0 cm...
QULIOL DI LUMILLI ILJ Oil 28% 10 cm (a) A cube of side length 10.0 cm and made of an unknown materials floats at the interface between water and oil. The oil has a density of 810 kgm . Cube floats so that it is 72% in the water and 28% in the oil. Calculate the mass of the cube and the buoyant force on the cube. 72% Water 10 cm A firehose with a diameter of 70 mm is connect to a water main. In order extinguish a given fire, the water leaving the hose needs to be able to reach a height of 18 m. (b) Calculate the gauge pressure required at the end of the hose such that the water is able to reach 18 m. (c) Calculate the velocity of the water as it leaves the hose. (d) Determine the volume of water that leaves the hose every minute.