Suppose the flow rate of blood through a 1.85 × 10–6-m radius capillary is 3.95 × 10-9 cm3/s. a) What is the speed, in centimeters per second, of the blood flow? (This small speed allows time for diffusion of materials to and from the blood.)  b) Assuming all the blood in the body passes through capillaries, with the given flow rate in each, how many of them must there be to carry a total flow of 90.0 cm3/s?

The speed v of a liquid leaving a tube depends on the change in pressure AP and the density p of the liquid. The speed is given by the equation v = k where k is a constant that has no units. What is the value of n? 1. B 2. 2.

Platelet cells in blood play an essential role in the formation of clots and exist in normal human blood at the level of about 2.00 × 105 per cubic millimeter. In order to illustrate that diffusion alone is not responsible for transporting platelets, consider the following situation. The diffusion constant for platelets in blood is approximately 5.00 x 1o-10 m2/s. About how long would it take a platelet to diffuse from the center of an artery (diameter 9.50 mm) to a clot forming on one wall of the artery? 9.02E4 S

A fish tank has dimensions 42 cm wide by 1.0 m long by 0.80 m high.If the filter should process all the water in the tank once every 3.0 h, what should the flow speed be in the 3.0-cm- diameter input tube for the filter?Express your answer to two significant figures and include the appropriate units.

For modeling and calculation purposes, architects treat air as an incompressible fluid. As an architect's intern, you are doing the specs on a dorm air conditioning system that is designed to replace the air in each room every twenty-three minutes. If the rooms each have a volume of 200 m3and they are supplied by ducts with a square cross section, determine the following. (a) the length of each side of a duct if the air speed in the duct is to be 3.6 m/s. m (b) the length of each side of a duct if the air speed at the duct is to be a value twice this speed.m

The following is a practice question for an upcoming test: At a resting pulse rate of 77 beats per minute, the human heart typically pumps about 73 mL of blood per beat. Blood has a density of 1060 kg/m3. Circulating all of the blood in the body through the heart takes about 1 min for a person at rest. On average, what mass of blood does the heart pump with each heart beat in kg? mass per heart beat:

Suppose blood is pumped from the heart at a rate of 5.1 L/min into the aorta of radius 1.3 cm a. Determine the speed of blood through the aorta, in centimeters per second.

The pressure in a compressed air storage tank is 1200 kPa. What is the tank’s pressure in (a) kN and m units; (b) kg, m, and s units; and (c) kg, km, and s units?

What is the diffusion time for oxygen accrues the 2um thick membrane separating air from blood? Assume that the diffusion coefficient for oxygen in tissue is 1.1 * 10^-11 m^2/s

The approximate inside diameter of the aorta is 0.48 cm; that of a capillary is 12 ?m. The approximate average blood flow speed is 1.0 m/s in the aorta and 1.0 cm/s in the capillaries. If all the blood in the aorta eventually flows through the capillaries, estimate the number of capillaries in the circulatory system. ___________capillaries