Conceptual Physical Science (6th Edition)
6th Edition
ISBN: 9780134060491
Author: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
Publisher: PEARSON
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Question
Chapter 5, Problem 116DQ
To determine
The reason why the blood pressure is measured at the upper arm at the elevation of the heart.
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Calculate the arterial blood pressure in the head and legs of an erect person in (cm Blood) unit. Assume that the head is (50 cm) above the heart and the legs (130 cm) below the heart. The density of blood is 1.05 g/cm3
Calculate the arterial blood pressure in the head and legs of an erect person in (cm Blood) unit. Assume that the head is (50 cm) above the heart and the legs (130 cm) below the heart. The density of blood is 1.05 g/cm3.
Suppose blood is pumped from the heart at a rate of 5.4 L/min into the aorta of radius 1.2 cm.
Suppose blood is pumped from the heart at a rate of 5.4 L/min into the aorta of radius 1.2 cm.
v= cm/s
A medical technician is trying to determine what percentage of a patient's artery is blocked by plaque. To do this, she measures the blood pressure just before the region of blockage and finds that it is 1.20×104 PaPa , while in the region of blockage it is 1.15×104 PaPa . Furthermore, she knows that blood flowing through the normal artery just before the point of blockage is traveling at 30.0 cm/scm/s , and the specific gravity of this patient's blood is 1.06.
1.
What percentage of the cross-sectional area of the patient's artery is blocked by the plaque?
Express your answer in percent.
Chapter 5 Solutions
Conceptual Physical Science (6th Edition)
Ch. 5 - Give two examples of a fluid.Ch. 5 - What happens to the volume of a loaf of bread that...Ch. 5 - Distinguish between mass density and weight...Ch. 5 - Distinguish between force and pressure. Compare...Ch. 5 - How does the pressure exerted by a liquid change...Ch. 5 - Ignoring the pressure of the atmosphere, if you...Ch. 5 - How does water pressure 1 m below the surface of a...Ch. 5 - If you punch a hole in the side of a container...Ch. 5 - Why does buoyant force act upward on an object...Ch. 5 - How does the volume of a completely submerged...
Ch. 5 - State Archimedes principle.Ch. 5 - What is the difference between being immersed and...Ch. 5 - How does the buoyant force on a fully submerged...Ch. 5 - What is the mass in kilograms of 1 L of water?...Ch. 5 - If a 1-L container is immersed halfway in water,...Ch. 5 - Does the buoyant force on a floating object depend...Ch. 5 - What weight of water is displaced by a 100-ton...Ch. 5 - By how much does the density of air increase when...Ch. 5 - What happens to the air pressure inside a balloon...Ch. 5 - What is the approximate mass in kilograms of a...Ch. 5 - How does the downward pressure of the 76-cm column...Ch. 5 - How does the weight of mercury in a barometer tube...Ch. 5 - Why would a water barometer have to be 13.6 times...Ch. 5 - When you drink liquid through a straw, is it more...Ch. 5 - What happens to the pressure in all parts of a...Ch. 5 - Docs Pascals principle provide a way to get more...Ch. 5 - A balloon that weighs 1 N is suspended in air,...Ch. 5 - Prob. 28RCQCh. 5 - Does Bernoullis principle refer to internal...Ch. 5 - What do peaked roofs, convertible tops, and...Ch. 5 - A 1-m-tall barrel is filled with water (with a...Ch. 5 - Show that the water pressure at the bottom of the...Ch. 5 - The depth of water behind the Hoover Dam is 220 m....Ch. 5 - The top floor of a building is 20 m above the...Ch. 5 - Suppose that you balance a 2-kg ball on the tip of...Ch. 5 - A 12-kg piece of metal displaces 2 L of water when...Ch. 5 - Prob. 52TASCh. 5 - A rectangular barge, 5 m long and 2 m wide, floats...Ch. 5 - Suppose that the barge in the preceding problem...Ch. 5 - A merchant in Kathmandu sells you a 1-kg solid...Ch. 5 - A vacationer floats lazily in the ocean with 90%...Ch. 5 - Your friend of mass 100 kg can just barely float...Ch. 5 - In the hydraulic pistons, shown, the smaller...Ch. 5 - On a perfect fall day, you are hovering at rest at...Ch. 5 - What change in pressure occurs in a party balloon...Ch. 5 - A mountain climber of mass 80 kg ponders the idea...Ch. 5 - Prob. 62TASCh. 5 - The wings of a certain airplane have a total...Ch. 5 - Rank the following from most to least: (a) The...Ch. 5 - Rank, from most to least, the percentage of volume...Ch. 5 - Think about what happens to the volume of an...Ch. 5 - Rank, from greatest to least, the volumes of air...Ch. 5 - Rank, from greatest to least, the buoyant forces...Ch. 5 - Rank, from greatest to least, the amounts of lift...Ch. 5 - When you squeeze a party balloon between your...Ch. 5 - A can of diet soft drink floats in water, whereas...Ch. 5 - The density of a rock doesn't change when it is...Ch. 5 - You know that a sharp knife cuts better than a...Ch. 5 - Which is more likely to hurtbeing stepped on by a...Ch. 5 - Stand on a bathroom scale and read your weight....Ch. 5 - Why are people who are confined to bed less likely...Ch. 5 - Prob. 77ECh. 5 - What common liquid covers more than two-thirds of...Ch. 5 - How much force is needed to push a nearly...Ch. 5 - Why is it inaccurate to say that heavy objects...Ch. 5 - Why does an inflated beach ball pushed beneath the...Ch. 5 - A half-filled bucket of water is on a spring...Ch. 5 - When a wooden block is placed in a beaker that is...Ch. 5 - Why will a block of iron float in mercury but sink...Ch. 5 - Why does a volleyball that is held beneath the...Ch. 5 - The mountains of the Himalayas are slightly less...Ch. 5 - Give a reason why canal enthusiasts in Scotland...Ch. 5 - The Falkirk Wheel in Scotland (Figure 5.17)...Ch. 5 - One gondola in the Falkirk Wheel carries a 50-ton...Ch. 5 - Both a 50-ton boat and a 100-ton boat float side...Ch. 5 - A ship sailing from the ocean into a fresh-water...Ch. 5 - In a sporting goods store, you see what appear to...Ch. 5 - Why is the pressure in an automobile's tires...Ch. 5 - How does the density of air in a deep mine compare...Ch. 5 - Prob. 95ECh. 5 - It is said that a gas fills all the space...Ch. 5 - Why is there no atmosphere on the Moon?Ch. 5 - We can understand how pressure in water depends on...Ch. 5 - If you could somehow replace the mercury in a...Ch. 5 - Would it be slightly more difficult to draw soda...Ch. 5 - Richards pump can operate at a certain maximum...Ch. 5 - Why is it so difficult to breathe when snorkeling...Ch. 5 - Say youve had a run of bad luck, and you slip...Ch. 5 - In the hydraulic arrangement shown, the larger...Ch. 5 - Prob. 105ECh. 5 - Your friend says that the buoyant force of the...Ch. 5 - When you replace helium in a balloon with...Ch. 5 - Prob. 108ECh. 5 - Prob. 109ECh. 5 - The force of the atmosphere at sea level against...Ch. 5 - Prob. 111ECh. 5 - Prob. 112ECh. 5 - What physics principle underlies the following...Ch. 5 - How does an airplane adjust its angle of attack so...Ch. 5 - The photo shows physics teacher Marshall...Ch. 5 - Prob. 116DQCh. 5 - Which teapot holds more liquid?Ch. 5 - Suppose you wish to lay a level foundation for a...Ch. 5 - If liquid pressure were the same at all depths,...Ch. 5 - Compared to an empty ship, would a ship loaded...Ch. 5 - A barge filled with scrap iron is in a canal lock....Ch. 5 - A discussion of the following question raises some...Ch. 5 - A balloon is weighted so that it is barely able to...Ch. 5 - Greta Novak is treated to remarkable flotation in...Ch. 5 - When an ice cube in a glass of water melts, does...Ch. 5 - Count the tires on a large tractor-trailer that is...Ch. 5 - Two teams of eight horses each were unable to pull...Ch. 5 - In the classroom demonstration at Lund University,...Ch. 5 - If you bring an airtight bag of potato chips...Ch. 5 - On a sensitive balance, weigh an empty, flat, thin...Ch. 5 - Invoking ideas from Chapter 2 and this chapter,...Ch. 5 - Your study partner says he doesn't believe in...Ch. 5 - Choose the BEST answer to the question or the BEST...Ch. 5 - The buoyant force that acts on a 20,000-N ship is...Ch. 5 - A floating duck displaces its own (a) volume of...Ch. 5 - A rock suspended by a weighing scale weighs 15 N...Ch. 5 - The two caissons of the Falkirk Wheel in Scotland...Ch. 5 - To what depth must an inverted drinking glass be...Ch. 5 - Atmospheric pressure is caused by the atmosphere's...Ch. 5 - A hydraulic device multiplies force by 100. This...Ch. 5 - The flight of a blimp best illustrates (a)...Ch. 5 - As water in a confined pipe speeds up, the...
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Similar questions
- How tall must be to measure blood pressure as high as 300 mm Hg?arrow_forwardConsidering the magnitude of typical arterial blood pressures, why are mercury rather than water manometers used for these measurements?arrow_forwardThe heart of a resting adult pumps blood at a rate of 5.00 L/min. (a) Convert this to cm3/s. (b) What is this rate m3/s?arrow_forward
- The human circulation system has approximately 1109 capillary vessels. Each vessel has a diameter of about 8 m. Assuming cardiac output is 5 L/min, determine the average velocity of blood flow through each capillary vessel.arrow_forwardThe left ventricle of a resting adult's heart pumps blood at a flow rate of 83.0 cm3/s , increasing its pressure by 110 mm Hg, its speed from zero to 30.0 cm/s, and its height by 5.00 cm. (All cumbers are averaged over the entire heartbeat) Calculate the total power output of left ventricle. Note that most of the power is used to increase blood pressure.arrow_forwardHow tall must a water-filled manometer be to measure blood pressures as high as 300 mm Hg?arrow_forward
- (a) As blood passes through the capillary bed in an organ, the capillaries join to form venules (small veins). If the blood speed increases by a factor of 4.00 and the total cross-sectional area of the venules is 10.0 cm2, what is the total cross-sectional area of the capillaries feeding these venules? (b) How many capillaries are involved if their average diameter is 10.0 m?arrow_forwardBlood is pumped from the heart at a rate of 5.0 L/min into the aorta (of radius 1.0 cm). Determine the speed of blood through the aorta.arrow_forwardDuring a marathon race, a runner's blood flow increases to 10.0 times her resting rate. Her blood's viscosity has dropped to 95.0% of its normal value, and the blood pressure difference across the circulatory system has increased by 50.0%. By what factor has the average radii of her blood vessels increased?arrow_forward
- A horizontal pipe 10.0 cm in diameter has a smooth reduction to a pipe 5.00 cm in diameter. If the pressure of the water in the larger pipe is 8.00 104 Pa and the pressure in the smaller pipe is 6.00 104 Pa, at what rate does water flow through the pipes?arrow_forwardA garden hose with a diameter of 2.0 cm is used to fill a bucket, which has a volume of 0.10 cubic meters. It takes 1.2 minutes to fill. An adjustable nozzle is attached to the hose to decrease the diameter of the opening, which increases the speed of the water. The hose is held level to the ground at a height of 1.0 meters and the diameter is decreased until a flower bed 3.0 meters away is reached. (a) What is the volume flow rate of the through the nozzle when the diameter 2.0 cm? (b) What does is the speed of coming out of the hose? (c) What does the speed of the water coming out of the hose need to be to reach the flower bed 3.0 meters away? (d) What is be diameter of nozzle needed to reach be flower bed?arrow_forward(a) Convert normal blood pressure readings of 120 over 80 mm Hg to newtons per meter squared using be relationship for pressure due to the weight of a fluid (p=hg) rater a conversion factor. (b) Explain why be blood pressure of an infant would likely be smaller than that of an adult. Specifically, consider the smaller height to which blood mast be pumped.arrow_forward
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