Problem 14.1CYU: Check Your Understanding If the reservoir in Example 14.1 covered twice the area, but was kept to... Problem 14.2CYU: Check Your Understanding Mercury is a hazardous substance. Why do you suppose mercury is typically... Problem 14.3CYU: Check Your Understanding Would a hydraulic press still operate properly if a gas is used instead of... Problem 1CQ: Which of the following substances are fluids at room temperature and atmospheric pressure: air,... Problem 2CQ: Why are gases easier to compress tan liquids and solids? Problem 3CQ: Explain how the density of air varies with altitude. Problem 4CQ: The images show a glass of ice water filled to the brim. Will the water overflow when the ice melts?... Problem 5CQ: How is pressure related to sharpness of a knife its ability to cut? Problem 6CQ: Why is a force exerted by a static fluid on a surface always perpendicular to the surface? Problem 7CQ: Imagine a remote location near the Nott Pole, a chunk of Ice floats a lake. Next to lake, a glacier... Problem 8CQ: In ballet, dancing en pointe (on the tips of the toes) is much harder on the toes normal dancing or... Problem 9CQ: Atmospheric pressure exerts a large force (equal to the weight of the atmosphere above your... Problem 10CQ: Why does atmospheric pressure decrease more rapidly than linearly with altitude? Problem 11CQ: The image shows how sandbags placed around a leak outside a river levee can effectively stop the... Problem 12CQ: Is there a net force on a dam due to atmospheric pressure? Explain your answer. Problem 13CQ: Does atmospheric pressure add to the gas pressure in a rigid tank? In a toy balloon? When, in... Problem 14CQ: You can break a strong wine bottle by pounding a cork into it with your fist, but the cork must... Problem 15CQ: Explain why the fluid reaches equal levels on either side of a manometer if both sides are open to... Problem 16CQ: Suppose the master cylinder in a hydraulic system is at a greater height than the cylinder it is... Problem 17CQ: More force is required to pull the plug in a full bathtub than when it is empty. Does this... Problem 18CQ: Do fluids exert buoyant forces in a “weightless" environment, such as in the space shuttle? Explain... Problem 19CQ: Will the same ship float higher in salt water than in freshwater? Explain you answer. Problem 20CQ: Marbles dropped into a partially filled bathtub sink to the bottom. Part of their weight is... Problem 21CQ: Mary figures in the show streamlines. Explain why fluid velocity is greatest where streamlines are... Problem 22CQ: You can squirt water from a garden hose a considerably greater distance by partially covering the... Problem 23CQ: Water is shot nearly vertically upward in a decorative fountain and the steam observed to broaden as... Problem 24CQ: Look back to figure 14.29. Answer the following two question. Why is poless than atmospheric? Why is... Problem 25CQ: A tube with a narrow segment designed to enhance entrainment is called a Venturi, such as below.... Problem 26CQ: Some chimney pipes have a T-shape, with a crosspiece on top that helps draw up gases whenever there... Problem 27CQ: Is there a limit to the height to which an entrainment device can raise a fluid? Explain your... Problem 28CQ: Why is it preferable for airplanes to take off into the wind rather than with the wind? Problem 29CQ: Roofs are sometimes pushed off vertically a tropical cyclone, and buildings sometimes explode... Problem 30CQ: It is dangerous to stud close to railroad tracks when a rapidly moving commuter train passes.... Problem 31CQ: Water pressure inside a hose nozzle can be less atmospheric pressure due to the Bernoulli effect.... Problem 32CQ: David rolled down the window on his car while driving on freeway. An empty plastic bag on the floor... Problem 33CQ: Based on Bernoulli’s equation, what are three forms of energy a fluid? (Note that these forms are... Problem 34CQ: The old rubber boot below has leaks. To what maximum height can water squirt from Leak 1? How does... Problem 35CQ: Water pressure inside a hose nozzle can be less than atmospheric pressure due to the Bernoulli... Problem 36CQ: Explain why the viscosity of a liquid decreases with temperature, that is, how might an increase in... Problem 37CQ: When paddling a canoe upstream, it is wisest to travel as near to the shore as possible. When... Problem 38CQ: Plumbing usually includes air-filled tubes tear water faucets (see the following figure). Explain... Problem 39CQ: Doppler ultrasound can be used to measure the speed of blood in the body. If there is a constriction... Problem 40CQ: Sink drains often have a device such as that shown below to help speed the flow of water. How does... Problem 41P: Gold is sold by the troy ounce (31.103 g). What is the volume of 1 troy ounce of pure sold? Problem 42P: Mercury is commonly supplied in flasks containing 34.5 kg (about 76 Ib.). What is the volume in... Problem 43P: What is the mass deep breath of air having a volume of 2.00 L? Discuss this effect taking such a... Problem 44P: A straightforward method of finding the density of an object is to measure its mass and then measure... Problem 45P: Suppose you have a coffee with a circular cross-section and vertical sides (uniform radius). What is... Problem 46P: A rectangular gasoline tank bold 30.0 kg of gasoline when full. What is the depth of the tank if is... Problem 47P: A trash compactor can compress its contents to 0.350 times their original volume. Neglecting mass of... Problem 48P: A 2.50-kg steel gasoline can holds 20.0 L of gasoline when full. What is the average density of gas... Problem 49P: What is the density of 18.0-karat gold that is a mixture of 18 parts gold, 5 parts silver, and 1... Problem 50P: The tip of a nail exerts tremendous pressure when hit by a hammer because it exerts a large force... Problem 51P: A glass tube mercury. What would be the height of the column of mercury which would create pressure... Problem 52P: The greatest ocean depths on Earth are found in the Marianas Trench near the Philippines. Calculate... Problem 53P: Verigy that the SI of hpg is N/m2. Problem 54P: What pressure is exerted the bottom of a gas tank that is 0.500-m wide and 0.900-m long and can hold... Problem 55P: A dam is used to hold back a river. The dam has a height H=12m and a width W=10m . Assume that... Problem 56P: Find ae gauge and absolute pressures in be balloon and peanut jar shown Figure 14.12, assuming be... Problem 57P: How tall must be to measure blood pressure as high as 300 mm Hg? Problem 58P: Assuming bicycle tires are perfectly flexible and support the weight of bicycle and rider by... Problem 59P: Pascal’s Principle and Hydraulics 59. How much pressure is transmitted in the hydraulic system... Problem 60P: What force must exerted on the master cylinder of a hydraulic lift to support the weight of a... Problem 61P: A host pours the remnants of several of wine into a jug a party. The host then inserts a cork with a... Problem 62P: A certain hydraulic system is designed to exert a force 100 times as large as the put into it. (a)... Problem 63P: Verify that work input equals work output for a hydraulic system assuming no losses due to fiction.... Problem 64P: What fraction of ice is submerged when it floats in freshwater, given the density of water 0°C is... Problem 65P: If a person's body has a density of 995 kg/m3, what fraction of the body will be submerged when... Problem 66P: A rock with a mass of 540 g in air is found to have an apparent mass of 342 g when submerged in... Problem 67P: Archimedes' principle can be used to calculate the density of a fluid as well as that of a solid.... Problem 68P: Calculate the buoyant force a 200-L helium balloon. (b) Given mass of rubber balloon is 1.50 g, what... Problem 69P: What is density of a woman floats in fresh water with 4.00% of her volume above the surface? (This... Problem 70P: A man has a mass of 80 kg and a density of 955kg/m3 (excluding the air in his lungs). (a) Calculate... Problem 71P: A simple compass cute made by placing a small bar magnet on a cork floating in water. (a) What... Problem 72P: What percentage of an iron anchor’s weight will be supported by buoyant force when submerged in salt... Problem 73P: Referring to Figure 14.20, prove that the buoyant force on be cylinder is equal to the weight of the... Problem 74P: A 75.0-kg floats in freshwater 3.00% of his volume above water when his are empty, and 5.00% of his... Problem 75P: What is the average flow rate in cm3/s of gasoline to the engine of a car traveling at 100 km/h if... Problem 76P: The heart of a resting adult pumps blood at a rate of 5.00 L/min. (a) Convert this to cm3/s. (b)... Problem 77P: The Huka Falls on the Waikato River is one of New Zealand's most visited natural tourist... Problem 78P: (a) Estimate the time it would take to a private swimming pool with a capacity of 80,000 L using a... Problem 79P: What is the fluid speed a hose a 9.00-cm diameter 80.0 L of water per second? (b) What is the flow... Problem 80P: Water is moving at a velocity of 2.00 m/s through a hose with internal diameter of 1.60 cm. (a) What... Problem 81P: Prove the sped of an incompressible fluid through a constriction, such as a Venturi tube, increases... Problem 82P: Water emerges straight down from a faucet with a 1.80-cm diameter at a speed of 0.500 m/s. (Because... Problem 83P: Verify that pressure has units of enery per unit volume. Problem 84P: Suppose you have a wind speed gauge like the pitot tube shown in Figure 14.32. By what factor must... Problem 85P: If be pressure reading of your pitot tube is 15.0 mm Hg at a speed of 200 km/h, what will it be at... Problem 86P: Every few years, winds in Boulder, Colorado, attain sustained speeds of 43.0 m/s (about 100 mph)... Problem 87P: What is the pressure drop due to the Bernoulli Effect as water goes into a 3.00-cm-diameter nozzle... Problem 88P: (a) Using Bernoulli's equation, show that be measured fluid speed v for a pitot tube, like the one... Problem 89P: A container of water has a cross-sectional area of A=0.1m2 . A piston sits top of the water (see be... Problem 90P: A fluid of a constant density flows through a reduction in a pipe. Find an equation for be change in... Problem 91P: (a) Calculate the retarding force due to viscosity of the air layer between a cart and a level air... Problem 92P: The arterioles (small arteries) leading to organ constrict in order to decrease flow to the organ.... Problem 93P: A spherical particle falling at a terminal speed in a liquid must have the gravitational force... Problem 94P: Using the equation of the previous problem, find the viscosity of motor oil in which a steel ball of... Problem 95P: A skydiver will reach a terminal velocity when the air drag equals his or her weight. For a skydiver... Problem 96P: (a) Verify that a 19.0% decrease in laminar flow through a tube is caused by a 5.00% decrease in... Problem 97P: When physicians diagnose arterial blockages, they quote reduction flow rate. If the flow rate an... Problem 98P: An oil gusher shoots crude 25.0 m the through a pipe with a 0.100-m diameter. Neglecting resistance... Problem 99P: Concrete is pumped from a cement mixer to the place it is being lad, instead of being carried... Problem 100P: Verify that flow of oil is laminar for an oil gusher that shoots crude oil 25.0 m into the air... Problem 101P: Calculate Reynolds numbers for flow of trough (a) a nozzle a radius of 0.250 cm and (b) a garden... Problem 102P: A fire hose has an inside diameter of 6.40 cm. Suppose such a hose caries a flow of 40.0 L/s... Problem 103P: At what rate might turbulence begin to develop in a water main with a 0.200-m diameter? Assume a... Problem 104AP: Before digital storage devices, such as the memory in your cell phone, music was stored vinyl disks... Problem 105AP: Water towers store water above the level of consumers for times of heavy use, eliminating need for... Problem 106AP: The aqueous humor in a person's eye is exerting a force of 0.300 N on the 1.10-cm2 area of the... Problem 107AP: (a) Convert normal blood pressure readings of 120 over 80 mm Hg to newtons per meter squared using... Problem 108AP: Pressure cookers have been around for more than 300 years, although their use has greatly declined... Problem 109AP: Bird bones have air pockets to reduce their weight—this also gives them an average density... Problem 110AP: In an immersion measurement of a woman's density, she is found to have a mass of 62.0 kg in air an... Problem 111AP: Some have a density slightly less than that of water and must exert a force (swim) to stay... Problem 112AP: The human circulation system has approximately 1109 vessels. Each vessel has a diameter of about 8m... Problem 113AP: The flow of blood through a 2.00106 m -radius capillary is 3.80109cm3/s . (a) What is the speed of... Problem 114AP: The left ventricle of a resting adult's heart pumps blood at a flow rate of 83.0 cm3/s , increasing... Problem 115AP: A sump pump (used to drain water from be basement of houses built below the water table) is draining... Problem 116AP: A glucose solution being administered with an IV has a flow rate of 4.00 cm3/min. What will the new... Problem 117AP: A small artery has a length of 1.1103m and a radius of 2.55105m . If the pressure drop across the... Problem 118AP: Angioplasty is a technique in which arteries partially blocked with plaque are dilated to increase... Problem 119AP: Suppose a blood vessel's radius is decreased to 90.0% of its original value by plague deposits and... Problem 120CP: The pressure dam early in problems section increases with depth. Therefore, there is net torque on... Problem 121CP: The temperature of atmosphere is not always constant and can increase or decrease with height. In a... Problem 122CP: A submarine is stranded on the bottom of the ocean with its hatch 25.0 m below surface. Calculate... Problem 123CP: Logs sometimes float vertically a lake because one end has become water-logged and denser than the... Problem 124CP: Scurrilous con artists have been known to represent gold-plated tungsten ingots as pure gold and... Problem 125CP: The inside volume of a house is equivalent to that of a rectangular solid 13.0 m wide by 200 m long... Problem 126CP: A garden hose with a diameter of 2.0 cm is used to fill a bucket, which has a volume of 0.10 cubic... Problem 127CP: A frequency quoted rule of thumb aircraft design is that wings should produce about 1000 N of lift... Problem 128CP: Two pipes of equal and constant diameter leave a water pumping and dump water cut of open end that... Problem 129CP: Fluid originally flows through a tube at a rate of 100 cm3/s. To illustrate the sensitivity of flow... Problem 130CP: During a marathon race, a runner's blood flow increases to 10.0 times her resting rate. Her blood's... Problem 131CP: Water supplied to a house by a water main has a pressure of 3.00105N/m2 early on a summer day when... Problem 132CP: Gasoline is piped underground from refineries to major users. The flow rate is 3.00102m3/s (about... format_list_bulleted
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