he pulmonary artery, which connects the heart to the lungs, has an inner radius of 2.60 mm and a length of 8.40 cm. If the drop in pressure between the heart and the lungs is 4.0 hPa. a) What is the average speed of the blood in the pulmonary artery?

Blood pressure is measured when the blood is pumping (systolic) and when the heart is resting (diastolic). When pressure readings are given, the systolic is given first, and healthy blood pressure is around 120 over 80 mm Hg. Recall the density of mercury is 13.6 × 103 kg/m3. a. Suppose you have a blood pressure reading of 116 over 82 mm Hg. What is your systolic pressure, in newtons per meter squared?  b. Suppose you have a blood pressure reading of 116 over 82 mm Hg. What is your diastolic pressure, in newtons per meter squared?

Helium gas is used to inflate balloons fora party. The density of helium is 0.179 kg/m. Find the density in g/cm and the specific volume in m / kg. O a. 0.000179 g/cm and 10.5867 m / kg O b. 0.179 g/cm3 and 5.5867 m / kg Oc. 0.00179 g/cm and 5.5867 m /kg O d. 0.000179 g/cm and 5.5867 m /kg

At a given instant, the blood pressure in the heart is 1.4 x 104 Pa. If an artery in the brain is 0.37 m above the heart, what is the pressure in the artery? Ignore any pressure changes due to blood flow.

A 1.50 mL syringe has an inner diameter of 5.50 mm, a needle inner diameter of 0.230 mm, and a plunger pad diameter (where you place your finger) of 1.2 cm. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. What is the minimum force the nurse needs to apply to the syringe? The nurse empties the syringe in 2.10 s. What is the flow speed of the medicine through the needle?

The blood pressure of an artery is measured at two heights: at the heart and 10 cm above the heart. The mass density of blood is about 1000 kg/m^3 and a typical artery has a diameter of 4 mm. (Use g = 10 m/s^2.) Compared to the pressure at heart height, the pressure 10 cm above is: Group of answer choices 100 P higher 1000 P lower 10 P higher 1000 P higher 100 P lower

The pressure drop along a length of artery is 103 Pa, the radius is 9.5 mm, and the flow is laminar. The average speed of the blood is 16.5 mm/s.Randomized Variables P = 103 Par = 9.5 mms = 16.5 mm/s a. What is the net force on the blood in this section of artery in N?  b. What is the power expended maintaining the flow in mW?

The average body density of a human is 1030 kg/m3, yet we typically float in seawater when we fill our lungs with air and sink when we exhale. Therefore, our effective density is similar to that of seawater, 1010 kg/m3. If the typical total volume (body density + lung capacity) of a human is 0.25 m3, what volume is due to body mass and what volume is due to lung capacity (you can assume the density of air is rair = 1.2 kg/m3)

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.

A fluid with density 1200 kg/m flows through this pipe. As the first location, A, the fluid travels at 7.5 m/s and at the second location, B, the fluid travels at 11 m/s. What is the difference in pressure between the two points? O-1.9 x 10 Pa +3.8 x 103 Pa -2.5 x 104 Pa -3.9 x 10 Pa O +5.0 x 104 Pa