I'm having a lot of trouble with fluids I need some help on these two questions :/ the mariana trench is located in the floor of the Pacific Ocean at a depth of about 11 000 m below the surface of the water. The density of seawater is 1025 kg/m^3. if an underwater vehicle were to explore such a depth, what force would the water exert on the vehicles observation window (radius=.10m)? For comparison, determine the weight of a jetliner whose mass is 1.2x10^5 kg The aorta carries blood away from the heart at a speed of 40 cm/s and has a radius of 1.1cm. The aorta branches eventually into a large number of tiny capillaries that distribute the blood to various organs. In a capillary, the blood speed is about .07 cm/s and the radius is about 6x10^-4cm. Treat the blood as an incompressible fluid, and use these data to determine the approximate number of capillaries in the human body any help please? thanks a lot!