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11 -- Part 2: Fluids in Motion

- 6.0 cm2 is 10-5 m2.

- The sketch of the plaque is one-ninth its normal area.
- The blood must be flowing in a channel where the plaque is nine times its normal speed if Point 1 is above the plaque.
- The net force is exerted by the arteries.
- Point 2 is in the bloodstream below the blood on the plaque, where the blood flows quickly past it.
- The difference in pressure at points 1 and 2 will affect the net force of the blood flows.
- We need to find the pressure difference first.

- This is the weight of half an apple pull ing on a plaque.
- The risk of breaking the plaque off the side wall of the vessel is tribute to the impact force caused by blood hitting the plaque's upstream side.
- For simplicity, assume that the blood flow in the smal er vessel is nonviscous and flows with the flow in the brain.
- Assume that the vertical distance is related to the stroke.

- The process is represented by a 10 m/s across the top surface of the clarinet reed.
- The air below the reed is not moving and it is less humid than at posi.
- The blood flows on the reed by the air above and below it.

- The 0.02 N upward is towards the inside of the constricted arteries.

- A stethoscope is placed on the inside of the elbow above the brachial arteries, as she places a cuff around the upper arm of a patient.
- The nurse pumps air into the Diastolic pressure cuff to increase the gauge pressure.

- The nurse slowly releases the air from the cuff.

- Turbu is lent and causes a sound to be heard with a stethoscope.
- Until the cuff pressure decreases below the diastolic pressure, the sound is turbulent.
- At that point, the arteries are open and the blood flow is smooth.

- The blood pressure measurement is made up of pressure numbers from the brachial arteries.

- All of the analyses in this chapter have focused on moving fluid, such as air or blood.
- As these fluids move through a tube, we were concerned about the resistance that occurs.
- A swimmer moving through water, a skydiver jumping through the air, or a car traveling through air are examples of solid objects moving through fluid.
- We have neglected this force in our mechanics problems so far.

- The water flows around the object with no turbulence.
- The fluid exerts drag on the object.

- The drag force is proportional to the speed of the object relative to the fluid.

- A rock falls quickly through the air.
- The motion of the air past the falling rock is turbulent.

- The threshold value for the drag force 411 flow is 1.
- The flow is turbulent if the Reynolds number is more than 1.

- The drag force and the shape of the object affect the drag coefficients.

- We need to use it.

- The drag force that air exerts on a compact car traveling at 27 m/s is estimated.

- The air density is 1.3 km3/m3 for a well-designed car.

- The flow of air past the drag force improves fuel economy.

- If the drag force on a person falling from a car increases by two times, the building is significant.
- Assume that a person accidentally drags force on a quadru that falls from a window.
- The Earth exerts force on him.

- The person's mass is divided by his volume.
- The buoy ant force is very small.
- The drag force can be estimated by assuming that the person's cross-sectional area is about 11.6 m and the air density is 1.3 km.

- The drag force is significant for a person falling from a small height.

- The drag force that the air exerts on the diver increases as a skydiver falls through the air.
- The downward force that Earth exerts on the diver is equal to the drag force that the air exerts on the diver.
- The terminal speed for a skydiver is estimated.

- D is 0.6.

- Below is a sketch of the situation.

- The axis point- speed increases.

- The diver Al of the quantities in the above expression are known to fall at constant terminal speed when the forces that the air and the Earth exert on the diver are equal in magnitude.

- If we assume that she is 1.5 m tal and 0.3 m wide, her cross-sectional area is about 0.2 m2.

- The unit is correct.
- The diver is shown to the right.
- Assume about 120 mph.

- She would be in the shape of a ball if she pulled her legs near the other forces.

- There are two empty soda cans on the table.

- The heart does about 1 J of work pumping blood.

- What is the main type of en 2?
- A house is destroyed by a tornado.

- Blow about 1 cm above the water.

- Air blowing past the window of a building causes the window straw to blow top of the first straw, so do not blow out the first straw.

- Predict what will happen.

- The closed top of a convertible bulges when the car goes down.

- The air above the chimney attracts ashes.

Why does the end of an envelope have to be cut?

- The air blowing past the outside exerts less force on the jug than it does on the inside.

- The person blowing tends to squeeze the edges of the jug, sitting on a table and squirting the side hole into the envelope.

- The one catching 8 is the container.
- As a river approaches a dam, the width of the river increases, the one catching the mercury must be closer, and the speed of the flowing water decreases.

- A model of an object squirts out farther if you partially close the end of a hose with your thumb.
- Give an explanation for why this happens.

- The level of possibilities is indicated by the axes.

- An application of Ber Determine the flow rate of water moving at an average speed is shown through a garden hose of 1.2 cm.
- The Bernoul i bar chart is connected to the first hose and can be used to measure the speed of the water.

- You live near an irrigation canal that is filled with water and draws a 0 to the top with it.

- A firefighter holds a hose.

- The equation is left by the water.

- The quantities are at two points if the water is fast.

- The aorta is 80 cm3>s.

How long would it take for the job to be done?

- The barrel is open.

- Only terms that are not zero should be represented.

- Water is pumped at different terms.

- There is no change to the symbolic equation.

- The fire hose is 60 m long and has a 0.060-m-radius.
- The water moves through the pipe at a rate of 2.2 m/s.
- The hose is at 12 m/s.

- A max 19 can be reached by the pump for the fire hose.
- You want to melt the imum pressure of 6.0 * 105 N>m2.
- There is snow on the cover of a swimming pool.
- The 50 m long is to carry water of 1.0 N # s>m2 above the ground.
- The plastic hose has a flow rate of 1.0 m3>s.

- If the water doesn't change your kitchen, you will wash the skylights in the tube.
- The skylights are above the ground.

- The roof blood has a flow rate of about 80 cm3>s.
- The blood flows of the house and the wider hose are connected to the faucet through 9 *109 capillaries.
- The opening of the smal er hose has a pressure of 10-4 cm and 0.1 cm long.
- The water needs to have a speed of 6.0 m/s if you want it to be viscous.

- A person carries water to homes.
- The flow rate of water in gauge pressure of blood flowing at 0.50 m/s inside a 1.0- cm each of the smaller pipes is to be 6.0.
- The gauge pressure is outside the arteries.
- The homes are above 3000 N>m2.
- A physician hears the main pipe when using his stethoscope.
- What is the average speed of the water?

- Blood flows at an average speed of 888-548-5870 has reduced its radius and subsequently reduced the in 0.40 m/s in a horizontal artery of 1.0 cm.
- The average blood pressure is less than the external pressure.
- What is the maximum diameter of the arteries?

- You wonder if the hotel is still across the arterioles during a storm.
- If the flow rate remains constant, the air speed can change by cent.

- The size of the window in your room is 1.0 m.

- A glass of water has a straw in it.
- You have a tube that is open at both ends.
- How fast must air blow across the top of the straw to get it into the tube?

- The length of A is twice that of B.
- The gate is small.

- Both tubes have the same pressure.

- 500 m is the length of a horizontal water pipe.
- One end of the tube is flowing at a rate of 1.0 m3>s.

- Engineers use a venturi meter to measure the speed of a cooler.

- They are at the same height.
- The relative speeds of positions 1 and 2 and tor can be determined by blowing air across the top surface of the eleva.

- The vein has a needle that is 3.0 cm long.

- The other tubes leading to the needle have larger radi and can be ignored.
- The vein has 1000 N>m2 above atmospheric pressure.

- It is necessary to determine if the fluid needs an additional 49.

- A 2300- kilo car has a drag coefficients of 0.60 and an effective frontal area of 2.8 m2.

- The drag force is determined by a red 50.

- Earth exerts a constant downward force.
- Assume no force is applied to the protein.

- The particles settle in less than an hour.

- The radius of a clay particle can be determined.
- The thermal energy generated per second in a nor force is on the clay particle.
- The water's viscosity is due to the force of blood on it.

- A sphere falls.
- The Earth exerts a constant down.
- Suppose your uncle has 0.50-N force on the sphere.
- D is going down.
- Determine the terminal length and terminal radius.
- The resistance speed of the sphere is determined by factors.

- 4 to blood flow through an arteriole change.
- The arterioles have a drag force of about 60mm Hg.

- D is 0.50.

- The hole was closed with a plug.

- Determine the initial flow rate of water after 55.
- A skier is going down a slope.
- It will take a long time to empty the angle below the horizontal because the air exerts on the skier and the solution of the fluids in motion is very dense.

- The drag coefficient is D.

- A grain of sand is placed in a lake.
- The terminal speed is 59.
- The answer is closest to the speed at which the sand sinks into the lake.
- The buoy should flow through the end of the tube to the ant force that the water exerts on the grain.

- A 2000@km2 area of remote Siberia is thought to have had an impact of 60.
- The Tunguska event is called if there is no resistive pressure drop.
- The terminal speed of the needle can be determined using Poiseuille's law.

- A patient in the hospital needs fluid from a bag of sugar.
- The solution travels from the 8000 N>m2 bag down a tube to a vein in 61 through a needle.
- You wonder if theglucose is from position 1 to position 2.
- The answer that is closest to making it into the patient's arm is below.

- Too little information is provided to answer the question.

- Venules rearrange and insert.

- The largest number of vessels in the group is the capillaries, which make up 25% of the total resistance.

- The percentages vary from person to person after the capil aries.
- The vessels with essential hypertension have arterioles and capil aries that begin to combine into a smaller number of larger vessels.
- The resistance to blood flow increases as you get older.

- The aorta has an average blood gauge pressure of 100mm Hg.
- As blood passes through 65, the pressure drops.
- 25% of the resistance is produced by the different groups of vessels, and the resistance is approximately 0mm Hg when to blood flow.
- The pressure drop is closest to the heart at the vena cava.

- arteriole resistance to fluid flow was about 0.62mm Hg.

- The total resistance is 67 and the gauge pressure drop is 100mm Hg.

- The arteries are close to the heart.

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