Connect 1 Semester Access Card For Fluid Mechanics Fundamentals And Applications
3rd Edition
ISBN: 9780077670245
Author: CENGEL
Publisher: McGraw-Hill Education
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Chapter 1, Problem 62P
To determine
The Mach number.
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From Table A.3, the density of glycerin at standard conditionsis about 1260 kg/m3 . At a very high pressure of 8000 lb/in2 , itsdensity increases to approximately 1275 kg/m3 . Use this datato estimate the speed of sound of glycerin, in ft/s.
Air enters a diffuser shown in with a speed of 200 m/s. Determine (a) the speed of sound and (b) the Mach number at the diffuser inlet when the air temperature is 30°C.
The speed of an aircraft is given to be 950 km/h. If the speed of sound at that location is 315 m/s, the Mach number is (a) 0.63 (b) 0.84 (c) 1.0 (d) 1.07 (e) 1.20
Chapter 1 Solutions
Connect 1 Semester Access Card For Fluid Mechanics Fundamentals And Applications
Ch. 1 - What is a fluid? How does it differ from a solid?...Ch. 1 - Consider the flow of air over the wings of an...Ch. 1 - Define incompressible flow and in compressible...Ch. 1 - Define internal, external, and open-channel flows.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 forced flow? How does it differ from...Ch. 1 - What is a boundary layer? What causes a boundary...
Ch. 1 - What is the difference between the classical and...Ch. 1 - What is a steady-flow process?Ch. 1 - Define stress, normal stress, shear stress, and...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 are system, surroundings, and boundary?Ch. 1 - Explain why the light-year has the dimension of...Ch. 1 - Prob. 19CPCh. 1 - What is the difference between pound-mass and...Ch. 1 - Prob. 21CPCh. 1 - What is the net force acting on a car cruising at...Ch. 1 - A 6-kg plastic tank that has a volume of 0.18 m3...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 - Prob. 26PCh. 1 - While solving a problem, a person ends up with the...Ch. 1 - A195-Ibm astronaut took his bathroom scale (a...Ch. 1 - The acceleration of high-speed aircraft sometimes...Ch. 1 - Prob. 30PCh. 1 - The value of the gravitational acceleration g...Ch. 1 - At 45° latitude: the gravitational acceleration as...Ch. 1 - Prob. 34PCh. 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 - 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 man goes to a traditional market to buy a steak...Ch. 1 - Water at 20°C from a garden hose fills a 2.0 L...Ch. 1 - A forklift raises a 90.5 kg crate 1.80 m. (a)...Ch. 1 - What is the importance of modeling in engineering?...Ch. 1 - What is the difference between the analytical and...Ch. 1 - Prob. 46CPCh. 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 reactive force developed by a jet to push an...Ch. 1 - The weight of bodies may change somewhat from one...Ch. 1 - An important design consideration in two-phase...Ch. 1 - Consider the flow of air through a wind turbine...Ch. 1 - Prob. 60PCh. 1 - The speed of an aircraft is given to be 260 m/s in...Ch. 1 - Prob. 62PCh. 1 - If mass, heat, and work are not allowed to cross...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 - Prob. 66PCh. 1 - Prob. 67PCh. 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...
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- B) Does the Mach number of a gas flowing at a constant speed remain constant?arrow_forwardThe speed of a spacecraft is given to be 1250 km/h in atmospheric air at −40°C. The Mach number of this flow is (a) 35 .9 (b) 0.85 (c) 1.0 (d ) 1.13 (e) 2.74arrow_forwardCalculate the ratio of kinetic energy to internal energy at a point in an airflow where the Mach number is: (a) M = 2, and (b) M = 20.arrow_forward
- Can the Mach number of a fluid be greater than 1 after a normal shock wave? Explain.arrow_forwardConsider an airplane flying at a velocity of 250 m/s. Calculate its Mach number if it is flying at a standard altitude of (a) sea level, (b) 5 km, (c) 10 km.arrow_forwardDetermine the speed of sound in carbon dioxide (M = 44 kg/kmol) at a pressure of 0.50 ATM and a temperature of 400 degC. *arrow_forward
- The pressure-density relation for ethanol is approximatedby Eq. with B =1600 and n = 7. Use this relation toestimate the speed of the sound of ethanol at 2000 atmospheres.arrow_forwardAir enters a diffuser with a velocity of 200m/s. Determine the speed of sound Mach number at the diffuser inlet at 30°Carrow_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
- How does the parameter Ma* differ from the Mach number Ma?arrow_forwardAn aircraft is flying at a speed less than 100 meters per second in sea level. Which of the following statement is true? A. density changes are small and the flow can be regarded as incompressible B. the flow should be regarded as compressible since Mach number is less than 0.3 C. the flow should be regarded as compressible since Mach number is greater than 0.3 D. density changes are small and the flow can be regarded as compressiblearrow_forwardDetermine the Mach Number of an airplane flying with a speed of 677 knots at a standard altitude of 39,344 ft.arrow_forward
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Intro to Compressible Flows — Lesson 1; Author: Ansys Learning;https://www.youtube.com/watch?v=OgR6j8TzA5Y;License: Standard Youtube License