A hypodermic needle is 3.20 cm in length and 0.39 mm in diameter. What pressure difference between the input and output of the needle is required so that the flow rate of water through it will be 1 g/s? (Use 1.0 × 10-3 Pa · s as the viscosity of water.) 5.64E+5 X Your response is off by a multiple of ten. Pa

At a given instant, the blood pressure in the heart is 1.7 x 104 Pa. If an artery in the brain is 0.46 m above the heart, what is the pressure in the artery? Ignore any pressure changes due to blood flow.

Part A: The human body typically contains 4.9 L of blood of density 1060 kg/m^3 . How many kilograms of blood are in the body? Part B: The average blood pressure is 1.30×104 Pa at the heart. What average force does the blood exert on each square centimeter of the heart? Part C: Red blood cells have a specific gravity of 5.0 and a diameter of about 7.5 μm. If they are spherical in shape (which is not quite true), what is the mass of such a cell?

If the viscosity of blood is 2.1x 10^-3 pa.s, and capillary of 100 um radius has a length of 4cm , then the blood flow resistance a cross this capillary be * 214x10^12 pa.sm^-3 2.14x10^12 pa.sm^-3 0.214 x10^12 pa.sm^-3 0.00214x10^12 pa.sm^-3

Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. The area A1is 1 square inch, and the area A2 is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown.     The pressure on A1 in psi is a. 0.25 b. 0.4 c. 4 d. 10 e. 40     The pressure on A2 in psi is a. 0.25 b. 0.4 c. 4 d. 10 e. 40

A medical technician is trying to determine what percentage of a patient's artery is blocked by plaque. To do this, she measured the blood pressure just before the region of blockage and finds that it is 1.20 × 104 Pa, while in the region of blockage it is 1.15 x 104 Pa. Furthermore, she knows that blood flowing through the normal artery just before the point of blockage is travelling at 30.0 cm/s. What percentage of the cross-sectional area of the patient's artery is blocked by the plaque?

A 1.52 m wide by 2.03 m long mattress weighs 294 N. Find the pressure that the mattres exerts on the bed frame. Assume the entire lower surface of the mattress makes contact with the bed frame.   441 Pa   907 Pa   95.3 Pa   219 Pa

An intravenous (IV) system is supplying saline solution to a patient at the rate of 0.120 ml/sec through a needle whose radius is 0.150 mm and length is 2.50 cm. The pressure of the blood in the patient’s vein is 8.00 mm Hg. What pressure is needed at the entrance of the needle to cause this flow, assuming the viscosity of the saline solution is (1.00×10⁻³ N ⋅ s/m²)?

While taking a shower, you notice that the shower head is made up of 44 small round openings, each with a radius of 2.00 mm. You also determine that it takes 5.00 s for the shower to completely fill a 1.00-liter container you hold in the water stream. The water for the shower is pumped by a pump that is 5.50 m below the level of the shower head. The pump maintains an absolute pressure of 1.50 atm. Use g = 10 m/s2, and assume that 1 atmosphere is 1.0  105 Pa. (a) At what speed does the water emerge from the shower head? (b) What is the speed of the water in the pipe connected to the pump? (c) What is the cross-sectional area of the pipe connected to the pump?

What is the absolute pressure at the bottom of the swimming pool 1 m high? * 1.11 x 105 Pa O 9.8 x 103 Pa O 9.8 x 105 Pa O 1.013 x 105 Pa