A pipe is horizontal and carries oil that has a viscosity of 0.14 Pa s. The volume ow rate of the oil is 5.2 X 10'5 m3/s. The length of the pipe is 37 m, and its radius is 0.58 cm. At the output end of the pipe the pressure is atmospheric pressure. What is the absolute pressure at the input end? Number n Units v The aorta carries blood away from the heart at a speed of about 36 cm/s and has a radius of approximately 1.1 cm. The aorta branches eventually into a large number of tiny capillaries that distribute the blood to the various body organs. In a capillary, the blood speed is approximately 0.071 cm/s, and the radius is about 5.6 x 10'4 cm. Treat the blood as an incompressible uid, and use these data to determine the approximate number of capillaries in the human body. Number n Units V A 75.6-kg person puts on a life jacket, jumps into the water, and oats. The jacket has a volume of 3.05 x 10'2 m3 and is completely submerged under the water. The volume of the person's body that is underwater is 6.07 x 10'2 m3. What is the density of the life jacket? Number n Units V