Suppose air, with a density of 1.29 kg/m' is flowing into a Venturi meter. The narrow section of the pipe at point A has a diameter that is 0.408 times the diameter of the larger section of the pipe at point B. The U- shaped tube is filled with water and the difference in height between the two sections of pipe is h =2.41 cm. B Air How fast is the air moving at point B? "B = m/s

Water is moving at a speed of 2.2 m/s through a hose with an internal diameter of 1.55 cm. a. What is the flow rate, in liters per second?  b. The fluid speed in this hose’s nozzle is 15.0 m/s. What is the nozzle’s inside diameter, in centimeter?

Fish control their buoyancy through the use of a swim bladder, a gas-filled organ inside the body. You can assume that the pressure inside the swim bladder is roughly equal to the external water pressure. A fish swimming at a particular depth adjusts the volume of its swim bladder to give it neutral buoyancy. If the fish swims upwards or downwards, the changing water pressure causes the bladder to expand or contract. Consequently, the fish adjusts the amount of gas in the bladder to restore it to the original volume and reestablish neutral buoyancy. Consider a large, 10.0 kg striped bass swimming in fresh water. When neutrally buoyant, 7% of the total volume of the fish is taken up by air in the swim bladder. Assume a constant body temperature of 15°C and neglect the mass of the air in your calculations. If the fish begins at a depth of 20 meters, what will the volume of the swim bladder be if the fish ascends to a depth of 10 m without changing the quantity of gas in the swim bladder?

When a garden hose with an output diameter of 20 mm is directed straight upward, the stream of water rises to a height of 0.16 m. You then use your thumb to partially cover the output opening and constrict it so that its diameter is reduced to 1.0 mm. Part A Calculate how high the water would rise. Express your answer with the appropriate units. ☐ ΜΑ ? h = Value Units Submit Request Answer

The water of a 14’ × 48’ metal frame pool can drain from the pool through an opening at the side of the pool. The opening is about h = 1.11 m below the water level. The capacity of the pool is V = 3880 gallons, the pool can be drained in t = 10.2 mins. P0 is the pressure of the atmosphere. ρ is the density of the water. a) Write the Bernoulli’s equation of the water at the top of the pool in terms of P0, ρ, h. Assuming the opening is the origin.  b) Write the Bernoulli’s equation of the water at the opening of the pool in terms of P0, ρ, h and v, where v is the speed at which the water leaves the opening. Assuming the opening is the origin.  c) Express the flow rate of the water in terms of V and t.  d) Calculate the numerical value of A in cm2

QUESTION 2 A vertical, cylindrical pipe has a height of 2.0 m and a radius of 8.0 cm. Water flowing upward from the bottom of the pipe has a speed of 3.0 m/s. If the water pressure is 100 kPa at the bottom of the pipe and 60 kPa at the top of the pipe, at what speed is the water flowing when it reaches the top of the pipe? a. 5.82 m/s b. 7.05 m/s C. 8.10 m/s d. 9.43 m/s e. 12.5 m/s

9. A fountain shoots water 8 m straight up. a. What is the pressure at the point where the water exits the pipe at ground level and when it reaches it maximum height of 8 m? b. How fast must the water be moving when it exits the pipe at ground level?

Using the appropriate equations, predict the effects in each scenario. a. Vessels X and Y have the same diameter. X is 5 cm long and Y is 10 cm long. Which has the faster velocity of flow for the same fluid? b. A blood vessel has a radius of 4 cm. Vasoconstriction reduces the radius to 1 cm. In order to maintain the same flow, by what factor must pressure increase? c. The blood vessel in B above dilates from 1 cm to 4 cm. Does the flow rate increase or decrease?

A3.0 mL syringe has an inner diameter of 4.0 mm, a needle inner diameter of 0.29 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. Assume the liquid is an ideal fluid. Part A What is the minimum force the nurse needs to apply to the syringe? Express your answer in newtons. |VG ΑΣΦ F = Submit Part B X Incorrect; Try Again; 5 attempts remaining Previous Answers Request Answer V= Submit The nurse empties the syringe in 3.8 s. What is the flow speed of the medicine through the needle? Express your answer in meters per second. [5] ΑΣΦ ? 3 Previous Answers Request Answer ? N X Incorrect; Try Again; 5 attempts remaining m/s

A sphygmomanometer is a device used to measure blood pressure, typically consisting of an inflatable cuff and a manometer used to measure air pressure in the cuff. In a mercury sphygmomanometer, blood pressure is related to the difference in helghts between two columns of mercury. The mercury sphygmomanometer shown in the figure below contains air at the cuff pressure P. Po The difference in mercury heights between the left tube and the right tube is h= 109 mmtg - 0.109 m, a normal systolic reading. What is the gauge systolic blood pressure Poauge in pascals? The density of mercury is p 13.6 x 10 kg/m and the ambient pressure is Po1.01 x 10 Pa. HINT Pa