Fluid Mechanics Fundamentals And Applications
3rd Edition
ISBN: 9780073380322
Author: Yunus Cengel, John Cimbala
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 2, Problem 27P
The analysis of a propeller that operates in water at 20°C shows that the pressure at the tips of the propeller drops to 2 kPa at high speeds. Determine if there is a danger of cavitation for this ropeller.
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Chapter 2 Solutions
Fluid Mechanics Fundamentals And Applications
Ch. 2 - For a substance, what is the difference between...Ch. 2 - What is the difference between intensive and...Ch. 2 - What is specific gravity? How is it related to...Ch. 2 - The specific weight of a system is defined as the...Ch. 2 - Prob. 5CPCh. 2 - Under what conditions is the ideal-gas assumption...Ch. 2 - What is the difference between R and Ru? How are...Ch. 2 - A fluid that occupies a volume of 24 L weighs 22 N...Ch. 2 - Prob. 9PCh. 2 - A mass of 1-Ibm of argon is maintained at 200 psia...
Ch. 2 - What is the specific volume of oxygen at 40 psia...Ch. 2 - The air in an automobile tire with a volume of...Ch. 2 - The pressure in an automobile tire depends on the...Ch. 2 - A spherical balloon with a diameter of 9 m is...Ch. 2 - Prob. 16PCh. 2 - Prob. 18EPCh. 2 - Does water boil at higher temperatures at higher...Ch. 2 - Prob. 22CPCh. 2 - What is cavitation? What causes it?Ch. 2 - What is vapor pressure? How is it related to...Ch. 2 - Prob. 24EPCh. 2 - A pump is used to transport water to a higher...Ch. 2 - Prob. 26PCh. 2 - The analysis of a propeller that operates in water...Ch. 2 - What is flow energy? Do fluids at rest possess any...Ch. 2 - How do the energies of a flowing fluid and a fluid...Ch. 2 - Prob. 30CPCh. 2 - Prob. 31CPCh. 2 - List the forms of energy that contribute to the...Ch. 2 - How are heat, internal energy, and thermal energy...Ch. 2 - Using average specific heats, explain how internal...Ch. 2 - Prob. 35CPCh. 2 - Saturated water vapor at 150°C (enthalpy...Ch. 2 - Prob. 37CPCh. 2 - What does the coefficient of volume expansion of a...Ch. 2 - Can the coefficient of compressibility of a fluid...Ch. 2 - Water at 15°C and 1 atm pressure is heated to 95°C...Ch. 2 - Prob. 41PCh. 2 - Prob. 42PCh. 2 - Water at 1 atm pressure is compressed to 400 atm...Ch. 2 - The volume of an ideal gas is to be reduced by...Ch. 2 - Saturated refrigerant-134a liquid at 10C is cooled...Ch. 2 - Prob. 46PCh. 2 - Prob. 47PCh. 2 - The density of seawater at a free surface where...Ch. 2 - Prob. 49EPCh. 2 - Prob. 50EPCh. 2 - Prob. 51PCh. 2 - The ideal gas equation of state is very simple,...Ch. 2 - A frictionless piston-cylinder device contains 10...Ch. 2 - Reconsider Prob. 2-48. Assuming a bear pressure...Ch. 2 - Prob. 55CPCh. 2 - Prob. 56CPCh. 2 - Prob. 57CPCh. 2 - Prob. 58CPCh. 2 - Prob. 59CPCh. 2 - Prob. 60CPCh. 2 - Is then sonic ve1ocity a specified medium a fixed...Ch. 2 - The Airbus A-340 passenger plane has a maximum...Ch. 2 - Carbon dioxide enters an adiabatic nozzle at 1200...Ch. 2 - Prob. 64PCh. 2 - Assuming ideal gas behavior, determine the speed...Ch. 2 - Prob. 66PCh. 2 - Steam flows through a device with a pressure of...Ch. 2 - Prob. 69EPCh. 2 - Air expands isentropically from 2.2 MPa 77C to 0.4...Ch. 2 - Repeat Prob. 2-66 for helium gas.Ch. 2 - Prob. 72PCh. 2 - What is viscosity? What is the cause of it is...Ch. 2 - Prob. 74CPCh. 2 - How does the kinematic viscosity of (a) liquids...Ch. 2 - Prob. 76CPCh. 2 - Prob. 77CPCh. 2 - The viscosity of a fluid is to be measured by a...Ch. 2 - Consider the flow of a fluid with viscosity ...Ch. 2 - A thin 30cm30cm flat plate is pulled at 3 m/s...Ch. 2 - A rotating viscometer consists of two concentric...Ch. 2 - The dynamic viscosity of carbon dioxide at 50°C...Ch. 2 - For flow over a plate, the variation of velocity...Ch. 2 - In regions far from the entrance, fluid flow...Ch. 2 - Repeat Prob. 2-83 for umax=6m/s .Ch. 2 - A frustum-shaped body is rotating at a constant...Ch. 2 - A rotating viscometer consists of two concentric...Ch. 2 - A large plate is pulled at a constant speed of U =...Ch. 2 - A cylinder of mass m slides down from rest in a...Ch. 2 - A thin plate moves between two parallel,...Ch. 2 - Prob. 95PCh. 2 - What is surface tension” What is its cause? Why is...Ch. 2 - Prob. 97CPCh. 2 - What is the capillary effect? What is its cause?...Ch. 2 - Prob. 99CPCh. 2 - Is the capillary rise greater in small- or...Ch. 2 - Prob. 101PCh. 2 - A2.4-in-diameter soap bubble is to be enlarged by...Ch. 2 - Prob. 103PCh. 2 - Determine the gage pressure inside a soap bubble...Ch. 2 - A 0.03-in-diameter glass tube is inserted into...Ch. 2 - Prob. 106PCh. 2 - A capillary tube of 1.2 mm diameter is immersed...Ch. 2 - Prob. 108PCh. 2 - Contrary to what you might expect, a solid steel...Ch. 2 - Nutrients dissolved in water are carried to upper...Ch. 2 - Prob. 111PCh. 2 - Consider a 55-cm-long journal bearing that is...Ch. 2 - Prob. 113PCh. 2 - Prob. 114PCh. 2 - A rigid tank contains an ideal gas at 300kPa and...Ch. 2 - The absolute pressure of an automobile tire is...Ch. 2 - The composition of a liquid with suspended solid...Ch. 2 - Prob. 119PCh. 2 - A 10-m3 tank contacts nitrogen at 25C and 800kPa....Ch. 2 - Prob. 123PCh. 2 - Although liquids, in general, are hard to...Ch. 2 - Prob. 125PCh. 2 - Prob. 126PCh. 2 - Prob. 127PCh. 2 - Reconsider Prob. 2-120. The shaft now rotates with...Ch. 2 - A 10-cm diameter cylindrical shaft rotates inside...Ch. 2 - Some rocks or bricks contain small air pockets in...Ch. 2 - Prob. 131PCh. 2 - Prob. 132PCh. 2 - Prob. 133PCh. 2 - Prob. 134PCh. 2 - Liquid water vaporizes into water vaper as it ?aws...Ch. 2 - In a water distribution system, the pressure of...Ch. 2 - Prob. 137PCh. 2 - The difference between the energies of a flowing...Ch. 2 - Prob. 139PCh. 2 - An ideal gas is compressed isothermally from...Ch. 2 - Prob. 141PCh. 2 - Prob. 142PCh. 2 - Prob. 143PCh. 2 - Water is compressed from 100 kPa to 5000 kPa at...Ch. 2 - Prob. 145PCh. 2 - The dynamic viscosity of air at 20C and 200kPa is...Ch. 2 - A viscometer constructed of two 30-cm -long...Ch. 2 - Prob. 148PCh. 2 - Prob. 149PCh. 2 - Prob. 150PCh. 2 - Prob. 151PCh. 2 - Prob. 152PCh. 2 - Prob. 153PCh. 2 - Prob. 154PCh. 2 - Evan though steel is about 7 to 8 times denser...
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- The analysis of a propeller that operates in water at 60°F shows that the pressure at the tips of the propeller drops to 0.1 psia at high speeds. Determine if there is a danger of cavitation for this propeller.arrow_forwardThe hydraulic lift in a car repair shop has an output diameter of 30 cm and is to lift cars up to 2500 kg. Determine the fluid gage pressure that must be maintained in the reservoir.arrow_forwardThe vacuum pressure of a condenser is given to be 98 kPa. If the atmosphericpressure is 98 kPa, what is absolute pressure in psi.arrow_forward
- (b) Consider two identical water tanks (20 m x 10 m x 10 m) filled with water. The depth of water in the first tank is 8 m and it is stationary. The depth of water in the second tank is 6 m and it is moving vertically downward with a constant acceleration of 3.3 m/s?. Which tank will have a higher pressure at the bottom? Now, the first tank is moving horizontally in the direction of its length with a constant acceleration of 2.4 m/s?. Determine the shape of the free surface and the total force on the base and vertical faces of this tank. What will happen if these tanks are completely filled with water?arrow_forwardThe right limb of a simple U-tube manometer containing mercury is open to the atmosphere while the left limb is connected to a pipe in which a fluid of SG = 0.9 is flowing. The center of the pipe is 12 cm below the level of mercury in the right limb. Find the pressure of fluid in the pipe if the difference of mercury level in the two limbs is 20 cm. Use SGHg = 13.6. P A 12 I 21K 20 cmarrow_forwardPipe A contains gasoline (SG = 0.7), pipe B contains oil (SG = 0.9), and the manometer fluid is ,ercury. Determine the new differential reading if the pressure in pipe A is decreased 25 kPa, and the pressure in pipe B remains constant. The initial differential reading is 0.30 m. (Hydrostatic)arrow_forward
- A spherical balloon is filled with Helium to a maximum diameter of 3 ft at a gage pressure of 8.78 in Hg and 28°C temperature. Find the mass of the Helium contained inside the balloonarrow_forwardA tank of water 4 m deep receives a constant upwardacceleration a z . Determine ( a ) the gage pressure at the tankbottom if a z = 5 m 2 /s and ( b ) the value of a z that causes thegage pressure at the tank bottom to be 1 atm.arrow_forwardA vertical frictionless piston cylinder contains air at a pressure of 300 KPa with atmospheric pressure of 100 KPa. The diameter of the piston is 0.25m, and g = 9.8m/s2. Determine the piston’s mass.arrow_forward
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