Fox and McDonald's Introduction to Fluid Mechanics
9th Edition
ISBN: 9781118912652
Author: Philip J. Pritchard, John W. Mitchell
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 6, Problem 48P
A mercury barometer is carried in a car on a day when there is no wind. The temperature is 20°C and the corrected barometer height is 761 mm of mercury. One window is open slightly as the car travels at 105 km/hr. The barometer reading in the moving car is 5 mm lower than when the car is stationary. Explain what is happening. Calculate the local speed of the air flowing past the window, relative to the automobile.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
An airplane is flying at a pressure altitude of 15 km with a velocity of 619 m/s.
The outside air temperature is 220 K. What is the pressure measured by a Pitot
tube mounted on the nose of the airplane?
COnsider an airplane flying at a standard altitude of 6km with a velocity of 330m/s. At a point on the wing of the airplane, the velocity is 400m/s. Calculate the pressure at this point. Cp=1008 j/kgK. answer should be in metric. and detailed solution.
Consider the wind tunnel shown below. The diameter at section 1 is 0.9 m and the diameter at section 2 is 0.4 m. A
manometer is used to determine the pressure difference between the two sections. The manometer liquid has a
specific gravity of 0.82. Determine the change in height in the manometer if the velocity at section 2 is 66 m/s. Assume
incompressible flow and standard sea-level conditions. Provide answer in centimeters. Round-off answer to the nearest
whole number.
Chapter 6 Solutions
Fox and McDonald's Introduction to Fluid Mechanics
Ch. 6 - An incompressible frictionless flow field is given...Ch. 6 - A velocity field in a fluid with density of 1000...Ch. 6 - The x component of velocity in an incompressible...Ch. 6 - Consider the flow field with the velocity given by...Ch. 6 - Consider the flow field with the velocity given by...Ch. 6 - The velocity field for a plane source located...Ch. 6 - In a two-dimensional frictionless, incompressible...Ch. 6 - Consider a two-dimensional incompressible flow...Ch. 6 - An incompressible liquid with a density of 900...Ch. 6 - Consider a flow of water in pipe. What is the...
Ch. 6 - The velocity field for a plane vortex sink is...Ch. 6 - An incompressible liquid with negligible viscosity...Ch. 6 - Consider water flowing in a circular section of a...Ch. 6 - Consider a tornado as air moving in a circular...Ch. 6 - A nozzle for an incompressible, inviscid fluid of...Ch. 6 - A diffuser for an incompressible, inviscid fluid...Ch. 6 - A liquid layer separates two plane surfaces as...Ch. 6 - Consider Problem 6.15 with the nozzle directed...Ch. 6 - Consider Problem 6.16 with the diffuser directed...Ch. 6 - A rectangular computer chip floats on a thin layer...Ch. 6 - Heavy weights can be moved with relative ease on...Ch. 6 - The y component of velocity in a two-dimensional...Ch. 6 - The velocity field for a plane doublet is given in...Ch. 6 - Tomodel the velocity distribution in the curved...Ch. 6 - Repeat Example 6.1, but with the somewhat more...Ch. 6 - Using the analyses of Example 6.1 and Problem...Ch. 6 - Water flows at a speed of 25 ft/s. Calculate the...Ch. 6 - Plot the speed of air versus the dynamic pressure...Ch. 6 - Water flows in a pipeline. At a point in the line...Ch. 6 - In a pipe 0.3 m in diameter, 0.3 m3/s of water are...Ch. 6 - A jet of air from a nozzle is blown at right...Ch. 6 - The inlet contraction and test section of a...Ch. 6 - Maintenance work on high-pressure hydraulic...Ch. 6 - An open-circuit wind tunnel draws in air from the...Ch. 6 - Water is flowing. Calculate H(m) and p(kPa). P6.36Ch. 6 - If each gauge shows the same reading for a flow...Ch. 6 - Derive a relation between A1 and A2 so that for a...Ch. 6 - Water flows steadily up the vertical 1...Ch. 6 - Your car runs out of gas unexpectedly and you...Ch. 6 - A tank at a pressure of 50 kPa gage gets a pinhole...Ch. 6 - The water flow rate through the siphon is 5 L/s,...Ch. 6 - Water flows from a very large tank through a 5 cm...Ch. 6 - Consider frictionless, incompressible flow of air...Ch. 6 - A closed tank contains water with air above it....Ch. 6 - Water jets upward through a 3-in.-diameter nozzle...Ch. 6 - Calculate the rate of flow through this pipeline...Ch. 6 - A mercury barometer is carried in a car on a day...Ch. 6 - A racing car travels at 235 mph along a...Ch. 6 - The velocity field for a plane source at a...Ch. 6 - A smoothly contoured nozzle, with outlet diameter...Ch. 6 - Water flows steadily through a 3.25-in.-diameter...Ch. 6 - A flow nozzle is a device for measuring the flow...Ch. 6 - The head of water on a 50 mm diameter smooth...Ch. 6 - Water flows from one reservoir in a 200-mm pipe,...Ch. 6 - Barometric pressure is 14.0 psia. What is the...Ch. 6 - A spray system is shown in the diagram. Water is...Ch. 6 - Water flows out of a kitchen faucet of...Ch. 6 - A horizontal axisymmetric jet of air with...Ch. 6 - The water level in a large tank is maintained at...Ch. 6 - Many recreation facilities use inflatable bubble...Ch. 6 - Water flows at low speed through a circular tube...Ch. 6 - Describe the pressure distribution on the exterior...Ch. 6 - An aspirator provides suction by using a stream of...Ch. 6 - Carefully sketch the energy grade lines (EGL) and...Ch. 6 - Carefully sketch the energy grade lines (EGL) and...Ch. 6 - Water is being pumped from the lower reservoir...Ch. 6 - The turbine extracts power from the water flowing...Ch. 6 - Consider a two-dimensional fluid flow: u = ax + by...Ch. 6 - The velocity field for a two-dimensional flow is...Ch. 6 - A flow field is characterized by the stream...Ch. 6 - The flow field for a plane source at a distance h...Ch. 6 - The stream function of a flow field is = Ax2y ...Ch. 6 - A flow field is characterized by the stream...Ch. 6 - A flow field is characterized by the stream...Ch. 6 - The stream function of a flow field is = Ax3 ...Ch. 6 - A flow field is represented by the stream function...Ch. 6 - Consider the flow field represented by the...Ch. 6 - Show by expanding and collecting real and...Ch. 6 - Consider the flow field represented by the...Ch. 6 - An incompressible flow field is characterized by...Ch. 6 - Consider an air flow over a flat wall with an...Ch. 6 - A source with a strength of q = 3 m2/s and a sink...Ch. 6 - The velocity distribution in a two-dimensional,...Ch. 6 - Consider the flow past a circular cylinder, of...Ch. 6 - The flow in a corner with an angle can be...Ch. 6 - Consider the two-dimensional flow against a flat...Ch. 6 - A source and a sink with strengths of equal...Ch. 6 - A flow field is formed by combining a uniform flow...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Determine the maximum compression of the spring mounted on car A. Neglect rolling resistance.
Engineering Mechanics: Dynamics (14th Edition)
The rigid bar is supported by the pin-connected rod CB that has a cross-sectional area of 14 mm2 and is made fr...
Mechanics of Materials
Determine the reactions at the supports. Prob. 4-6
Statics and Mechanics of Materials (5th Edition)
How are touch probes used in CNC machines to improve process capability?
DeGarmo's Materials and Processes in Manufacturing
What are the conditions necessary to produce high-quality diffusion welds?
Degarmo's Materials And Processes In Manufacturing
Exhaust gas from a furnace is used to preheat the combustion air supplied to the furnace burners. The gas,which...
Fundamentals of Heat and Mass Transfer
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Consider an airplane flying with a velocity of 60ft/s at a standard sea level conditions. At a point on the wing, the airflow velocity is 70ft/s. Calculate the pressure at this point. Assume the incompressible flow.arrow_forwardŞuppose you have a wind speed gauge like the pitot tube shown in figure below. By what factor must wind speed increase to double the value of h in the manometer? Is this independent of the moving fluid and the fluid in the manometer? ha pvå v = 0 Figure caption: Meașurement of fluid speed based on Bernoulli's principle. This type of velocity measuring device is a Prandtl tube, also known as a pitot tube. Is this independent of the moving fluid and the fluid in the manometer? O Yes O Noarrow_forwardTo what head of air (R = 287 J · kg−1·K−1) at an absolutepressure of 101.3kPa andtemperature of 15◦C is a pressureof 75 mm of water equivalent?arrow_forward
- Consider air having standard sea level density is flowing through a wind tunnel. At the entrance of the wind tunnel, the velocity is 38 m/s. At the throat, the velocity is 169 m/s. Determine the density at the throat if the throat area is 37% of the area at the entrance. Provide answer in standard metric units. Round off answer to the nearest thousandths.arrow_forwardAn airplane is flying at 350 mi/h at 4000 m standard altitude. As is typical, the air velocity relative to the upper surface of the wing, near its maximum thickness, is 26 percent higher than the plane's velocity. Using Bernoulli's equation, calculate the absolute pressure at this point on the wing. Neglect elevation changes and compressibility. (The properties of air at 4000 m are p = 61633 Pa, p = 0.8191 kg/m³) Paarrow_forwardB8arrow_forward
- An airplane is flying at sea level at a speed of 100 mps. Calculate the free-stream total pressure (Pa)arrow_forwardA liquid with kinematic viscosity of 3 centi stokes and specific weight 9 kN/m3 fills the space between a large stationary plate and a parallel plate of 475 mm square, the film thickness being 1 mm. If the smaller plate is to be pulled with uniform velocity of 4 m/s, determine the force required if the liquid film is maintained all through.arrow_forwardAn airplane is flying at sea level at a speed of 100 mps. Calculate the free-stream dynamic pressure (Pa)arrow_forward
- An enclosed tank containing a liquid of density r has a hole in its side at a distance y1 from the tank’s bottom (as shown). The hole is open to the atmosphere, and its diameter is much smaller than the diameter of the tank. The air above the liquid is maintained at a pressure P. Determine the speed of the liquid as it leaves the hole when the liquid’s level is a distance h above the hole.arrow_forwardThroughout, take the acceleration due to gravity to be 10 m/s? and water to have density of 1000 kg/m³. Question 1 A large block of mass 1100 kg is towed at a constant speed UB up an inclined plane at 6° to the horizontal, as shown in Fig. 1. The towing force applied on the block has magnitude 1165 N. The block slides over an oil film with a constant thickness of 3 mm. The oil has density 900 kg/m and dynamic viscosity 0.1 Pa.s. The area of the block in contact with the oil is 15 m2. UB F=1165 N m=1100 kg oil film 3 mm contact area: 15 m² 6° Figure 1 (i) Sketch, with appropriate labels, the forces acting on the block in the direction parallel to the inclined plane. (ii) Determine the magnitude of the drag force acting on the bottom surface of the block. (iii) Assuming a laminar velocity profile in the oil film, determine the speed of the block Ug. (iv) Verify that the flow of oil is laminar as assumed in (iii). (v) Determine the power requirement to tow the block. (vi) To reduce the…arrow_forward1 Consider a rapidly rotating (ie, in near geostrophic balance) Boussineq fluid on the f plane. A) Show that the pressure divided by the density scales as Φ ≈ fUL B) Show that the horizontal divergence of the geostrophic wind vanishes. Thus, argue that the scaling W ≈ UH = L is an overestimate for the magnitude of the vertical velocityarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Heat Transfer – Conduction, Convection and Radiation; Author: NG Science;https://www.youtube.com/watch?v=Me60Ti0E_rY;License: Standard youtube license