4. Fluids and Pressure 4. When your urinary bladder is full, the bladder pressure can reach up to 60 mm H,0.a. What is this pressure in units of Pascal?b. Assuming that there is no height difference between your urinary bladder and whereyour urine comes out, calculate the speed at which your urine comes out. The densityof urine is 1030 kg/m².c. If the diameter of a urethra is 6mm, estimate the volume flow rate of urine as it comesout in units of liters per second.d. If a full bladder constitutes 500 ml of urine, how long will it take you to remove all ofthe urine from your bladder?e. The answer in part (d) is somewhat a realistic time for peeing? What should we factor..........in in order to make it more realistic?... .........

Answered: Image /qna-images/answer/f7f59c71-7444-4871-9811-84b374acff9d.jpg

4. When your urinary bladder is full, the bladder pressure can reach up to 60 mm H,0. a. What is this pressure in units of Pascal? b. Assuming that there is no height difference between your urinary bladder and where your urine comes out, calculate the speed at which your urine comes out. The density of urine is 1030 kg/m. C. If the diameter of a urethra is 6mm, estimate the volume flow rate of urine as it comes out in units of liters per second. d. If a full bladder constitutes 500ml of urine, how long will it take you to remove all of the urine from your bladder? e. The answer in part (d) is somewhat a realistic time for peeing? What should we factor in in order to make it more realistic? ........S

4. When your urinary bladder is full, the bladder pressure can reach up to 60 mm H,0. a. What is this pressure in units of Pascal? b. Assuming that there is no height difference between your urinary bladder and where your urine comes out, calculate the speed at which your urine comes out. The density of urine is 1030 kg/m. C. If the diameter of a urethra is 6mm, estimate the volume flow rate of urine as it comes out in units of liters per second. d. If a full bladder constitutes 500ml of urine, how long will it take you to remove all of the urine from your bladder? e. The answer in part (d) is somewhat a realistic time for peeing? What should we factor in in order to make it more realistic? ........S

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter12: Fluid Dynamics And Its Biological And Medical Applications

Section: Chapter Questions

Problem 59PE: Gasoline is piped underground from refineries to major users. The flow rate is 3.00102 m3/s (about...

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(a) Suppose a blood vessel's radius is decreased to 90.0% of its original value by plaque deposits and the body compensates by increasing the pressure difference along the vessel to keep the flow rate constant. By what factor must the pressure difference increase? (b) If turbulence is created by the obstruction, what additional effect would it have on the flow rate?
(a) What is the density of a woman who floats in freshwater with 4.00% of her volume above the surface? This could be measured by placing her in a tank with marks on the side to measure how much water she displaces when floating and when held under water (briefly). (b) What percent of her volume is above the surface when she floats in seawater?
In an immersion measurement of a woman's density, she is found to have a mass of 62.0 kg in air and an apparent mass of 0.0850 kg when completely submerged with lungs empty. (a) What mass of water does she displace? (b) What is her volume? (c) Calculate her density. (d) If her lung capacity is 1.75 L is she able to float without treading water with her lungs filled with air?
Gasoline is piped underground from refineries to major users. The flow rate is 3.00102 m3/s (about 500 gal/ min), the viscosity of gasoline is 1.00103 (N/m2) s, and its density is 680 kg/m3. (a) What minimum diameter must the pipe have if the Reynolds number is to be less than 2000? (b) What pressure difference must be maintained along each kilometer of the pipe to maintain this flow rate?
What is the difference between flow rate and fluid velocity? How are they related?
What is the greatest average speed of blood flow at 37° C in an artery of radius 2.00 mm if the flow is to remain laminar? What is the corresponding flow rate? Take the density of blood to be 1025 kg/m3.
Water is moving at a velocity of 2.00 m/s through a hose with an internal diameter of 1.60 cm. (a) What is the flow rate in liters per second? (b) The fluid velocity in this hose's nozzle is 15.0 m/s. What is the nozzle's inside diameter?
Unreasonable Results A fairly large garden hose has an internal radius of 0.600 cm and a length of 23.0 m. The nozzle-less horizontal hose is attached to a faucet, and it delivers 50.0 L/S. (a) What water pressure is supplied by the faucet? (b) What is unreasonable about this pressure? (c) What is unreasonable about the premise? (d) What is the Reynolds number for the given flow? (Take the viscosity of water as 1.005103(N/m2)s .)
Water emerges straight down from a faucet with a 1.80-cm diameter at a speed of 0.500 m/s. (Because of the construction of the faucet, there is no variation in speed across the stream.) (a) What is the flow rate in cm3/s? (b) What is the diameter of the stream 0.200 m below the faucet? Neglect any effects due to surface tension.
(a) Estimate the time it would take to fill a private swimming pool with a capacity of 80,000 L using a garden hose delivering 60 L/min. (b) How long would it take to fill if you could divert a moderate size river, flowing at 5000 m3/s, into it?
. A juniper-wood plank measuring 0.25 ft by 1 ft by 16 ft is totally submerged in water, (a) What is its weight? (b) What is the buoyant force acting on it? (c) What is the size and the direction of the net force on it?
(a) The pressure inside an alveolus with a 2.00104 -m radius is 1.40103 Pa, due to its fluid-lined walls. Assuming the alveolus acts like a spherical bubble, what is the surface tension of the fluid? (b) Identify the likely fluid. (You may need to extrapolate between values in Table 11.3.)