Construction Materials, Methods and Techniques (MindTap Course List)
4th Edition
ISBN: 9781305086272
Author: William P. Spence, Eva Kultermann
Publisher: Cengage Learning
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Chapter 7, Problem 12RQ
To determine
The aggregates used in insulating concrete
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The jet plane is flying upward such that its wings make
an angle of attack of 15° with the horizontal. The plane is
traveling at V = 750 m/s, in air having a temperature
of 8°C and absolute pressure of 95 kPa. The leading
edge of the wing has an angle of 8°. (Figure 1)
Figure
4°
15°
1 of 1
་
Determine the pressure of the air just in front or to the right of the expansion waves.
Express your answer to three significant figures and include the appropriate units.
☐
μι
?
p =
50.6
kPa
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Part B
Determine the temperature of the air just in front or to the right of the expansion waves.
Express your answer using three significant figures.
T = 229 K
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Please show all work, including; Ma? Ay? V at A,B,C. Shear diagram, M/EI diagram, tB/C, tC/A deflection curve and thetaC? Etc...
7-31. Use the moment area method and determine the slope at C and the displacement at B. EI is constant. Structural Analysis 10 edition
Air at a temperature of 25° C and standard atmospheric
pressure of 101.3 kPa flows through the nozzle into the
pipe where the absolute internal pressure is 90 kPa.
The nozzle has a throat diameter of d = 25 mm. Gas
constant for air is R = 286.9 J/[kg K] and its specific
heat ratio is k = 1.40. (Figure 1)
Part A
Determine the mass flow into the pipe.
Express your answer using three significant figures.
Figure
1 of 1
VO
ΜΕ ΑΣΦ
vec
m = 0.0482
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Chapter 7 Solutions
Construction Materials, Methods and Techniques (MindTap Course List)
Ch. 7 - What are the basic ingredients in concrete?Ch. 7 - How does concrete cure and harden?Ch. 7 - What ingredients normally make up Portland cement?Ch. 7 - What are the designations for the different types...Ch. 7 - Prob. 5RQCh. 7 - How does the addition of air-entraining materials...Ch. 7 - What ingredients may be used in masonry cements?Ch. 7 - How does the fineness of the cement affect the...Ch. 7 - Explain how Portland cement should be stored.Ch. 7 - What natural aggregates are used in making...
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- Outside air at a temperature of 25° C is drawn into the duct and then heated along the duct at 149 kJ/kg. At section 1 the temperature is T = 15° C and the absolute pressure is 98 kPa. Neglect friction. (Figure 1) Part B Figure 50 mm -2 m Correct Correct answer is shown. Your answer 0.6142 was either rounded differently or used a different number of significant figures than required for this part. Determine the temperature at section 2. Express your answer using three significant figures. 跖 ΑΣΦ vec 1 of 1 T₂ = Submit Request Answer ་ Part C ? K Determine the pressure at section 2. Express your answer to three significant figures and include the appropriate units. μÅ ?arrow_forwardThe jet is flying at M = 1.3, where the absolute air pressure is 25 kPa. A shock is formed at the inlet of the engine. Assume isentropic flow within the engine. k = = 1.40 for air. (Figure 1) Figure 0.4 m 0.6 m M = 1.3 1 of 1 Po = 67.8 kPa Submit Previous Answers ་ Part C Correct What is the pressure in this region? Express your answer to three significant figures and include the appropriate units. µÅ p= 42.8 kPa Submit Previous Answers Request Answer ? × Incorrect; Try Again; 3 attempts remaining Provide Feedbackarrow_forwardQ5 A piece of sandstone with a bulk volume of 1.3 cc is contained in a 5-cc cell filled with helium at 760 mm Hg. Temperature is maintained constant and the cell is opened to another evacuated cell the same volume. The final pressure in the two vessels is 334.7 mm Hg. What is the porosity of the sandstone?arrow_forward
- Please show all work, including; Ma? Ay? V at A,B,C. Shear diagram, M/EI diagram, tB/C, tC/A deflection curve and thetaC? Etc... 7-31. Use the moment area method and determine the slope at C and the displacement at B. EI is constant. Structural Analysis 10 editionarrow_forwarddevelop a phased construction schedule with a minimum of 150 activities. You should include a WBS complete with preconstruction/procurement activities as well. All activities should linked with predecessors and successors to allow the software to auto-schedule the work; to start “as soon as possible’. Use January 6, 2025 as a start date. do it based off an elementary school and put detail in the actvities add durations Need help!!!arrow_forwardCEFUNDAM BATTERY REVIEW SITUATION: From a building across, the angle of depression of the base of the front edifice is 23.50 and the angle of elevation of its top is 52.780. The height of observation is 14 m. What is the height of the edifice? How far is the building from the said edifice? What is the angle of elevation of the top of the edifice from the foot of the building?arrow_forward
- EFUNDAM BAT Three numbers whose sum is 3 form an arithmetic sequence and their squares form a geometric sequence. What is the common difference?arrow_forwardCEFUNDAM BATTERY REVIEW Water evaporates at the rate of two liters per hour per one square meter of surface. How long will it take to evaporate 30 liters of water from a cylindrical swimming pool full of water with 6 m in diameter and 2 m depth? Qarrow_forwardCEFUNDAM BATTERY REVIEW Find the greatest volume possible for a closed cylindrical tank to be made from 115 sq. m. of metal plate.arrow_forward
- CEFUNDAM BATTERY REVIEW SITUATION: For the three identical cylinders whose diameter is 600 position as shown, each weighs 800 N. Assume no friction at any contact surface. Which of the following most nearly gives the force at A, in Newtons? Which of the following most nearly gives the force at D, in Newtons? Which of the following most nearly gives the force at F, in Newtons?arrow_forwardI need detailed help solving this exercise from homework of Foundation Engineering. I do not really understand. Step by step, please.arrow_forward1. Consider a frictionless retaining wall. Assume its surface toward the backfill side is vertical and the soil ground is horizontal. If the retaining wall moves towards backfill, answer the following based on Coulomb's earth pressure theory. (1.1) Show the forces acting on the failure wedge. (1.2) Draw the force polygon for this condition. (1.3) Write down the steps to find the resultant force of earth pressure per unit length of the wall. (1.4) About the Fig. 2, draw a graph showing the relationship between the displacement {u(-) and u(+)} of the retaining wall and the earth pressure, P that acts on that wall. Also, within the graph, indicate the earth pressures, that represent equivalent active and passive earth pressures. Displacement u(-) Retaining wall 0₁ TNT displacement u(+) Failure plane Retaining wall Failure plane 02 a) Active state b) Passive state Figure 2 (1.5) Explain the conditions under which Rankine's earth pressure theory and Coulomb's earth pressure theory become…arrow_forward
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