Fluid Mechanics: Fundamentals and Applications
4th Edition
ISBN: 9781259696534
Author: Yunus A. Cengel Dr., John M. Cimbala
Publisher: McGraw-Hill Education
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Chapter 1, Problem 9CP
What is the no-slip condition? What causes it?
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Chapter 1 Solutions
Fluid Mechanics: Fundamentals and Applications
Ch. 1 - What is a fluid? How does it differ from a solid?...Ch. 1 - Define internal, external, and open-channel flows.Ch. 1 - Define incompressible flow and in compressible...Ch. 1 - Consider the flow of air over the wings of an...Ch. 1 - What is forced flow? How does it differ from...Ch. 1 - How is the Mach number of a flow defined? That...Ch. 1 - When an airplane is flying at a constant speed...Ch. 1 - Consider the flow of air at a Mach number of 0.12....Ch. 1 - What is the no-slip condition? What causes it?Ch. 1 - What is a boundary layer? What causes a boundary...
Ch. 1 - What is a steady-flow process?Ch. 1 - Define stress, normal stress, shear stress, and...Ch. 1 - What are system, surroundings, and boundary?Ch. 1 - When analyzing the acceleration of gases as they...Ch. 1 - When is a system a closed system, and when is it a...Ch. 1 - You are to understand how a reciprocating air...Ch. 1 - What is the difference between pound-mass and...Ch. 1 - In a news ankle, is stated that a recently...Ch. 1 - Explain why the light-year has the dimension of...Ch. 1 - What is the net force acting on a car cruising at...Ch. 1 - A man goes to a traditional market to buy a steak...Ch. 1 - What is the weight, in N, of an object with a mass...Ch. 1 - What is the weight of a 1-kg substance in N,...Ch. 1 - Determine the mass and the weight of the air...Ch. 1 - A 3-kW resistance heater a water beater...Ch. 1 - A195-Ibm astronaut took his bathroom scale (a...Ch. 1 - The acceleration of high-speed aircraft sometimes...Ch. 1 - A 10-kg rock is thrown upward with a force of 280...Ch. 1 - The value of the gravitational acceleration g...Ch. 1 - At 45° latitude: the gravitational acceleration as...Ch. 1 - 1-32 The gravitational constant g is 9.807m/s2 at...Ch. 1 - On average, an adult person breathes in about 7.0...Ch. 1 - While solving a problem, a person ends up with...Ch. 1 - An airplane flies horizontally at 70m/s . Its...Ch. 1 - If the airplane of Prob. 1-35 weighs 17 lbf,...Ch. 1 - The boom of a fire truck raises a fireman (and his...Ch. 1 - A 6-kg plastic tank that has a volume of 0.18m3 is...Ch. 1 - Water at 15°C from a garden hose fills a 1.5 L...Ch. 1 - A forklift raises a 90.5 kg crate 1.80 m. (a)...Ch. 1 - The gas tank of a car is filled with a nozzle that...Ch. 1 - A pool of volume V (in m3) is to filled with water...Ch. 1 - Based on unit considerations alone, show that the...Ch. 1 - What is the importance of modeling in engineering?...Ch. 1 - What is the difference between the analytical and...Ch. 1 - When modeling an engineering process, how is the...Ch. 1 - What is the difference between precision and...Ch. 1 - How do the differential equations in the study of...Ch. 1 - What is the value of the engineering software...Ch. 1 - The weight of bodies may change somewhat from one...Ch. 1 - The reactive force developed by a jet to push an...Ch. 1 - An important design consideration in two-phase...Ch. 1 - Consider the flow of air through a wind turbine...Ch. 1 - A tank is filled with oil whose density is =850...Ch. 1 - If mass, heat, and work are not allowed to cross...Ch. 1 - The speed of an aircraft is given to be 260 m/s in...Ch. 1 - One J/kg is equal to (a) 1kPam3 (b) 1kNm/kg (c)...Ch. 1 - Which is a unit for power? (a) Btu (b) kwh (c)...Ch. 1 - The speed of an aircraft is given to be 950 km/h....Ch. 1 - The weight of a 10-kg mass at sea level is (a)...Ch. 1 - The weight of a 1 -Ibm mass is (a) 1Ibmft/s2 (b)...Ch. 1 - A hydroelectric power plant operates at its rated...Ch. 1 - Write an essay on the various mass- and...Ch. 1 - Search the Internet to find out how to properly...Ch. 1 - Another unit is kgf, which is a force unit used...Ch. 1 - Discuss why pressure tests of pressurized tanks...
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- The standard linear solid (SLS), also known as the Zener model, is a method of modeling the behavior of a viscoelastic material using a linear combination of springs and dashpots to represent elastic and viscous components, respectively. E2 E1 The constitutive equation for this viscoelastic model will be of the following form: TOSHIBAarrow_forwardA cylinder has a massless piston of surface area A = 7.87×10-3 m ² at one end and is closed at the other. It contains V = 0.69 litres of air at a temperature of T = 273 K and a pressure of p = 1.41×105 Nm 2. If a force of F = 1.81×10 ³ N were suddenly applied to the piston, the resultant displacement of the piston is s = 0.94 mm. Assume that no heat is exchanged i.e. Q = 0. Calculate the change in entropy of the gas (once it has reached equilibrium) using the thermodynamic identity.arrow_forwardA tall open-topped standpipe has an inside diameter of 2820 mm and a wall thickness of 7.1 mm. The standpipe contains water, which has a mass density of 1,000 kg/m³. (a) What height h of water will produce a circumferential stress of 12.7 MPa in the wall of the standpipe? (b) What is the axial stress in the wall of the standpipe due to the water pressure? Answers: (a) h = i m. (b) Jaxial- MPa.arrow_forward
- Detemine the horizontal and vertical components of the liquid pressure acting on the semicylindrical gate ABC, as shown in the figure. The width into the paper is 1 m. 1 m Liquid (s.g. = 0.88) 4 m B 4.2 m 1 m Fx=164.018 kN and Fy=37.229 kN O Fx=141.327 kN and Fy=31.171 kN Fx=257.430 kN and Fy=59.801 kN Fx=288.147 kN and Fy=69.098 kN Fx=213.112 kN and Fy=47.903 kN Fx-187.005 kN and Fy=42.182 kN Fx=234.789 kN and Fy=52.418 kN Fx=98.182 kN and Fy-20.002 kNO Fx-119.956 kN and Fy-25.550 kN Fx=269.894 kN and Fy-65.526 kN Oarrow_forwardDerive a formula for the bulk modulus of an ideal gas, with constant specific heats, and calculate it for steam at 300°C and 200 kPa. Compare your result to the steam tables.arrow_forwardA hydrogen-filled balloon is to expand to a sphere 20 m diameter at a height of 30 km where the absolute pressure is 1100 Pa and the temperature is – 40 degree C. If there is to be no stress in the fabric of the balloon, what volume of hydrogen must be added at ground level where the absolute pressure is 101.3 kPa and the temperature is 15 degree C?arrow_forward
- A large plate moves with speed vo over a stationary plate on a layer of oil (see Fig. 1-5). If the velocity profile is that of a parabola, with the oil at the plates having the same velocity as the plates, what is the shear stress on the moving plate from the oil? If a linear profile is assumed, what is the shear stress on the upper plate? Assumed profile Oil layer Vo Fig. 1-5arrow_forwardWhat is hydrostatic force? How is the magnitude, direction and location of thehydrostatic force determined?arrow_forwardA tall open-topped standpipe has an inside diameter of 2010 mm and a wall thickness of 6.7 mm. The standpipe contains water, which has a mass density of 1,000 kg/m³. (a) What height h of water will produce a circumferential stress of 16.1 MPa in the wall of the standpipe? (b) What is the axial stress in the wall of the standpipe due to the water pressure? h Answers: (a) h = i m. (b) Jaxial- i MPa.arrow_forward
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