The pulmonary artery, which connects the heart to the lungs, has an inner radius of 2.8 mm and is 8.9 cm long. If the pressure drop between the heart and lungs is 410 Pa, what is the average speed of blood in the pulmonary artery?
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- Given the average heart rate of a human is 7.00 beats per minute and the average volume flow of blood pumped out by the heart to the body is 70.0ml/beat. A, Determine the average flow rate for blood in units of milliliters per minute.(mL/min)A. On the average, what volume of blood, in liters, does the heart pump during each beat? B. On the average, what volume of blood, in cubic centimeters, does the heart pump during each beat?A large tank is filled to capacity with 500 gallons of pure water. Brine containing 2 pounds of salt per gallon is pumped into the tank at a rate of 5 gal/min. The well-mixed solution is pumped out at the same rate. a) Find the number A(t) of pounds of salt in the tank at time t. b) what is the concentration c(t) of the salt in the tank at time t? At t=5 min? What is the concentration of the salt in the tank after a long time (we can this concentration the limiting value), that is, as t→--? At what time is the concentration of the salt in the tank equal to one-half this limiting value? 500 gallons
- The 26-cm-long left coronary artery is 4.6 mm in diameter. Blood pressure drops by 3.0 mm Hg over this distance. Part A What is the average blood speed? Express your answer with the appropriate units. HÀ Vavg Value Units %3D Submit Request Answer ▼ Part B What is the volume flow rate in L/min through this artery? Express your answer in liters per minute. να ΑΣφ L/min Q = %3D Submit Previous Answers Request Answer Tuu A goin: 7 attempts remainingTwo cylindrical cross section water tanks are arranged so that the outflow from tank 1 falls into tank 2. The outflow from tank 2 flows to the drain. ģ is the volumetric flow rate out of a tank, and h is the height of the water in a tank. (a) State the fundamental physical law, and provide the general equation for a tank used to model the time history of the tank levels, h, and hz. Your equation should contain the following terms: A (eross sectional area of a water tank), p (density of water), and h (rate of change of the height of the water in a tank) (b) Both outflows have the characteristic volumetric flow rate being directly proportional to the head in the tank. ie. ġ1 = a, h, and q2 = azh2. Show that the differential equation governing the head in tank 2 has the form of : h, + ah, = be" Time, t, is the independent variable. Take the initial values of the heads to be A h(0) = H, and h,(0)= H,. Determine a, b and c. (Note: There is no d, or hi in the equation governing tank 2. You…A Blowhard Tests of lung capacity show that adults are able to exhale 1.5 liters of air through their mouths in as little as 1.0 second. Figure Part A If a person blows air at this rate through a drinking straw with a diameter of 0.75 cm, what is the speed of air in the straw? Express your answer using two significant figures. 15| ΑΣΦ A v= Submit ▾ Part B h= Request Answer [V] ΑΣΦ Submit O If the air from the straw in part A is directed horizontally across the upper end of a second straw that is vertical, as shown in the figure(Figure 1), to what height does water rise in the vertical straw? Express your answer using two significant figures. Request Answer ? → O m/s ? Review III
- 50 g of gasoline are mixed with 60 g of water. What is the average density of the mixture?Express your answer using two significant figures.During a 60 seconds period, a loop-detector is occupied by vehicles for the following times: 0.28, 0.32,0.42, 0.50, and 0.55 sec. Take the distance between the loop detectors as 3 m and the average length of the vehicle as 6.2 m. Calculate the values of lane occupancy, density, speed and flow rate.The volumetric flow rate of blood in a person at rest is about 5 L per minute. The beginning of the aorta(the part closest to the heart) has a diameter of 3 cm, but the end of the aorta in the lower abdomen hasa diameter of only 1.75 cm.a. What is the flow rate of blood at the beginning of the aorta in m/s?b. What is the flow rate of blood at the end of the aorta in the lower abdomen in m/s?c. How much faster is the blood traveling at the end of the aorta than it is at the beginning?
- Human blood flows from the aorta to the capillaries. A girl has an aorta radius of 13 mm. Assume she has 7 billion capillaries in the body, the capillaries radius average 4 µm (micrometer), and the blood speed average 0.5 mm/s in the capillaries. The blood speed is _____ mm/s in the aorta.A very simple way of measuring the depth of a fluid in a gas station's underground gasoline tank is by using a pressure gauge that measures gauge pressure. Assume the fluid in the tank is gasoline with a density of 700 kg/m3 and g = 9.80 m/s2. If the gauge pressure is 25.9 kPa what is the depth of the gasoline in the tank? Assume 3 significant digits. Watch the units! A. 3.78 cm B. 37.8 m C. 0.378 m D. 3.78 m E. 3.78 mmA cylindrical storage tank has a radius of 1.00 m. When filled to a height of 3.93 m, it holds 13300 kg of a liquid industrial solvent. What is the density of the solvent? Number i Units