Problem 1CP: Someone claims that the absolute pressure in a liquid of constant density doubles when the depth is... Problem 2CP: A tinysteel cube is suspended in water by a string. If the lengths of the sides of the cube are very... Problem 3CP: Express Pascal’s law, and give a real-world example of it. Problem 4CP: Consider two identical fans, one at sea level and the other on top of a high mountain, running at... Problem 5CP: What is the difference between gage pressure and absolute pressure? Problem 6CP: Explain why some people experience nose bleeding and some others experience shortness of breath at... Problem 7P Problem 8P: A vacuum gage connected to a chamber reads 36 kPa at a location where the atmospheric pressure is 92... Problem 9EP: The pressure at the exit of an air compressor is 150 psia. What is this pressure in kPa? Problem 10EP: The pressure in a water line is 1500 kPa. What is the line pressure in (a) Ibf/ft2 units and (b)... Problem 11EP: A manometer is used to measure the air pressure in a tank. The fluid used has a specific gravity of... Problem 12P: The water in a tank is pressurized by air, and the pressure is measured by a multifluid manometer as... Problem 13P: Determine the atmospheric pressure at a location where the barometric reading is 735 mmHg. Take the... Problem 14P: The gagepressure in a liquid at a depth of 2.5 m is read to be 28 kPa. Determine the gage pressure... Problem 15P: The absolute pressure in water at a depth of 8 m is read to be 175 kPa. Determine (a) the local... Problem 16EP: Show that 1kgf/cm2=14.223psi . Problem 17EP Problem 18P: Consider a 55-kg woman who has a total foot imprintarea of 400 cm2. She wishes to walk on the snow,... Problem 19P: A vacuum gage connected to a tank reads 45 kPa at a location where the barometric reading is 755... Problem 20EP Problem 21P: A pressure gage connected to a tank reads 500kPa at a location where the atmospheric pressure 94... Problem 22P Problem 23P Problem 24P: Water from a reservoir is raised in a vertical tube of internal diameter D =30 cm under the... Problem 25P: The barometer of a mountain hiker reads 980 mbars at the beginning of a hiking trip and 790 mbars at... Problem 26P: The basic barometer can be used to measure the height of a building. If the barometric readings at... Problem 28P Problem 29EP Problem 30P: A gas is contained in a vertical, frictionless piston-cylinder device. The piston has a mass of 5 kg... Problem 32P: Both a gage and a manometer are attached to a gas tank to measure its pressure. If the reading on... Problem 34P: The variation of pressure P in a gas with density is given by P=Cp* where C and n and are constants... Problem 35P: The system shown in the figure is used to accurately measure the pressure changes when the pressure... Problem 36P: The manometer shown in the figure is designed to measure pressure of up to a maximum of 100 Pa. If... Problem 37P: A manometer containing ( =850kg/m3 ) attached to a tank filled with air. If the oil-level difference... Problem 38P: A mercury ( =13,600kg/m3 ) is connected to an air duct to measure the pressure inside The difference... Problem 39P: Repeat Prob. 3-37 for a differential mercury height of 25 mm. Problem 40P: Blood pressure is usually measured by rapping a closed air-filled jacket quipped with a pressure... Problem 41P: The maximum blood pressure in the upper arm of a healthy person is about 120 mmHg. If a vertical... Problem 42P: Consider a 1.73-m-tall man standing vertically in water and completely submerged in a pool.... Problem 43P: Consider a U-tube whose arms are open to the atmosphere. Now water is poured into the U-tube from... Problem 44P Problem 45P: Freshwater and seamier flowing in parallel horizontal pipelines are connected to each other by a... Problem 46P: Repeat Prob. 3-48 by replacing the air with oil whose specific gravity is 0.72. Problem 47EP: The pressure in a natural gas pipeline is measured by the manometer shown in Fig. P3-42E with one of... Problem 48EP: Repeat Prob. 3-42E by replacing air by oil with a specific gravity of 0.69. Problem 49P: The gage pressure of the air in the tank shown in Fit P3-44 is measured to be 50 kPa. Determine the... Problem 50P: Repeat Prob. 3-44 for a gage pressure of 40 kPa. Problem 51P: The 500-kg load on the hydraulic lift show in Fig. P3-46 is to be raised by pouring oil ( =7800kg/m3... Problem 52EP Problem 53P: Pressure is often given in terms of a liquid column and is expressed as "pressure head." Express tie... Problem 54P Problem 55P: Consider a double-fluid manometer attached to an air pipe shown in Fig. P355. If the specific... Problem 56P: The pressure difference between an oil pipe and water pipe is measured by a double-fluid manometer,... Problem 57P: Consider the system shown in Fig. P3-51. If a change of 0.9 kPa in the pressure of air causes the... Problem 58P Problem 59P Problem 60CP: Define the resultant hydrostatic force acting on a submerged surface, and the center of pressure. Problem 61CP: Someone claims that she can determine the magnitude of the hydrostatic force acting on a plane... Problem 62CP: A submersed horizontal flat plate is suspended in water by a string attacked at the centroid of its... Problem 63CP: You may have noticed that dams are much thicker at the bottom. Explain why dams are built that way. Problem 64CP: Consider a submerged curved surface. Explain how you would determine the horizontal component of the... Problem 65CP: Consider a submersed curved surface. Explain how you would determine the vertical component of the... Problem 66CP: Consider a circular surface subjected to hydrostatic forces by a constant density liquid. If the... Problem 67P: Consider a heavy car submerged in water in a lake with a flat bottom. The driver’s side door of the... Problem 68EP: A long, solid cylinder of radius 2 ft hinged at point A is used as an automatic gate, as shown in... Problem 69P: Consider a 8-m-long, 8-m-wide, and 2-m-high aboveground grinning pool that is filled with water to... Problem 70EP: Consider a 200-ft-high, dam filled to capacity. Determine (a) the hydrostatic force on the dam and... Problem 71P: A room the lower level of a cruise ship has a 40-cm-diaineter circular window. If the midpoint of... Problem 72P: The water side of the wall of a 70-m-long dam is a quarter circle with a radius of 7 m. Determine... Problem 73P: For a gate width of 2 m into the paper (Fig. P3-78), determine the force required to hold the gate K... Problem 74P: Determine the resultant force acting on the 0.7-m-high and 0.7-m-wide triangular gate shown in Fig... Problem 75P: A 6-m-high, 5-m-wide rectangular plate blocks the end of a 5-m-deep freshwater channel, as shown in... Problem 77EP: The flow of water from a reservoir is controlled by a 5-ft-wide L-shaped sate hinged ai point A. as... Problem 78EP: Repeat Prob. 3-76E for a water height of 6 ft. Problem 79P: A water trough of semicircular cross section of radius 0.6 m consists of two symmetric parts hinged... Problem 80P Problem 81P: An open settling tank shown in the figure contains a liquid suspension. Determine the resultant... Problem 82P: From Prob. 3-80, knowing that the density of the suspension depends on liquid depth and changes... Problem 83P Problem 84P: The two sides of a V-shaped water trough are hinged to each other at the bottom where they meet, as... Problem 85P: Repeat Prob. 3-82 for the case of a partially filled trough with a water height of 0.35 m directly... Problem 86P: A retaining wall against a mud slide is to be constructed by placing 1 .2-m-high and 0.25-m-wide... Problem 87P Problem 88P: A 4-m-long quarter-circular gate of radius 3 m and of negligible weight is hinged about its upper... Problem 89P: Repeat Prob. 3-90 for a radius of 2 m for the gate. Problem 90P: Consider a flat plate of thickness t, width w into the page, and length b submerged in water, as in... Problem 91P Problem 92P: Consider a 1-m wide inclined gate of negligible weight that separates water from another fluid. What... Problem 93P Problem 94CP: What is buoyant force? What causes it? What is the magnitude of the buoyant force acting on a... Problem 95CP: Consider two identical spherical bails submerged water at different depths. Will the buoyant forces... Problem 96CP: Consider two 5-cm-diaineter spherical balls-one made of aluminum, the other of iron-submerged in... Problem 97CP Problem 98CP Problem 99P: The density of a liquid is to be determined by an old 1-cm-diameier cylindrical hydrometer whose... Problem 100EP: A crane is used to lower weights into a lake for an underwater construction project. Determine the... Problem 101P Problem 102P Problem 103P Problem 104P: It is estimated that 90 percent of an iceberg’s volume is below the surface, while only 10 percent... Problem 105P: The weight of a body is usually measured by disregarding buoyancy force applied by the air. Consider... Problem 106P Problem 107P Problem 108P: The hull of a boat has a volume of 180 m3, and the total mass of the boat when empty is 8560 kg.... Problem 109CP: Under what conditions can a moving body of fluid be treated as a rigid body? Problem 110CP: Consider a glass of water. Compare the water pressures at the bottom surface for the following... Problem 111CP: Consider two identical glasses of water, one stationary and the other moving on a horizontal plane... Problem 112CP: Consider a vertical cylindrical container partially filled with water. Now the cylinder is rotated... Problem 113P Problem 114P: Consider two water tanks filled with water. The first tank is 8 m high and is stationary, while the... Problem 115P Problem 116EP: A 3-ft-diameter vertical cylindrical lank open to the atmosphere contains 1-ft-high water. The tank... Problem 117P Problem 118P: A 30-cm-diameter, 90-cm-high vertical cylindrical container is partially filled with 60-cm-high... Problem 119P: A fish tank that contains 60-cm-high water is moved in the cabin of an elevator. Determine the... Problem 120P: A 3-m-diameter vertical cylindrical milk tank rotates at a constant rate of 12 rpm. If the pressure... Problem 121P: Consider a tank of rectangular cross-section partially filled with a liquid placed on an inclined... Problem 122P: The bottom quarter of a vertical cylindrical tank of total height 0.4 m and diameter 0.3 m is filed... Problem 123P: Milk with a density of 1020 kg/m3 is transported on a level road in a 9-m-long, 3-m-diameter... Problem 124P Problem 125P: The distance between the centers of the two arms of a U-tube open to the atmosphere is 30 cm, and... Problem 126P: A 1.2-m-diameter, 3-m-high scaled vertical cylinder is completely filled with gasoline whose density... Problem 128EP: A15-ft-long, 6-ft-high rectangular tank open to the atmosphere is towed by a truck on a level road.... Problem 129EP: An 8-ft-long tank open to the atmosphere initially contains 3-ft-high water. It is being towed by a... Problem 130P: A 3-m-diameter, 7-m-long cylindrical tank is completely filled with water. The tank is pulled by a... Problem 131P Problem 132P Problem 133P Problem 134P Problem 135P: An air-conditioning system requires a 34-m-long section of 12-cm-diameter ductwork to be laid... Problem 136P Problem 137P: If the rate of rotational speed of the 3-tube system shown in Fig. P3-135 is =10 rad/s, determine... Problem 138P: A 30-cm-diameter vertical cylindrical vessel is rotated about its vertical axis at a constant... Problem 139P Problem 141P Problem 142EP Problem 143P: The basic barometer can be used as an altitude-measuring device in airplanes. The ground control... Problem 144P: The lower half of a 12-m-high cylindrical container is filled with water ( =100kg/m3 ) and the upper... Problem 145P: A vertical, frictionless pistoncylinder device contains a gas at 500 kPa. The atmospheric pressure... Problem 146P: A pressure cooker cooks a lot faster than an ordinary pan by maintaining a higher pressure and... Problem 147P Problem 148P: The average atmospheric pressure on earth is approximated as a function of altitude by the relation... Problem 149P: When measuring small pressure differences with a manometer, often one arm of the manometer is... Problem 150EP Problem 151P Problem 153P: A gasoline line is connected to a pressure gage through a double-U manometer: as shown in Fig.... Problem 154P Problem 155EP Problem 156P: The pressure of water flowing through a pipe is measured by the arrangement shown in Fig. P3156. For... Problem 157P: Consider a U-tube filled with mercury as shown in Fig. P3-153. The diameter of the right aim of the... Problem 158P Problem 159P: The variation of pressure with density in a thick gas layer is given by P = Cp. where C and n are... Problem 160P: A 3-m-high. 5-m-wide rectangular gale is hinged al the top edge at A and is restrained by a fixed... Problem 161P Problem 162EP: A semicircular 40-ft-diameter tunnel is to be built under a 150-ft-deep. 800-ft-king lake, as shown... Problem 163P: A 30-ton. 4-m-diameter hemispherical dome on a level surface is filled with water, as shown in Fig.... Problem 164P: The water in a 25-m-deep reservoir is kept inside by a 90-m-wide wall whose cross section is an... Problem 165P Problem 166P: A 1-m-diameter, 2-m-high vertical cylinder is completely filled with gasoline whose density is 740... Problem 167P: A 5-m-long, 4-m-high tank contains 2.5-m-deep water when not in motion and is open to the atmosphere... Problem 169P Problem 170P Problem 171P: The density of a floating body can be determined by tying weights to the body until both the body... Problem 172P: The 280-ke, 6-m-wide rectangular gate shown in Fig P3-167 is hinged at t and leans against the floor... Problem 173P Problem 174P Problem 175P Problem 176P: The gage pressure in a pipe is measured by a manometer containing mercury ( =13.600kg/m3 ). The top... Problem 177P Problem 178P Problem 179P Problem 180P: Consider the vertical rectangular wall of a water tank with a width of 5 m and a height of 8 m. The... Problem 181P Problem 182P Problem 183P Problem 184P Problem 185P Problem 187P: Consider a 6-m-diameter spherical sate holding a body of water whose height is equal to the diameter... Problem 188P Problem 189P Problem 190P Problem 191P Problem 192P Problem 193P: A 15-cm-diameter, 40-cm-high vertical cylindrical container is partially filled with 25-cm-high... Problem 194P Problem 195P Problem 196P: Shoes are to be designed to enable people of up to 80 kg to walk on freshwater or seawater. The... Problem 197P: The volume of a rock is to be determined without using any volume measurement devices. Explain how... Problem 198P: The density of stainless steel is about 8000 kg/m3 (eight times denser than water), but a razor... format_list_bulleted