The nozzle of a supersonic wind tunnel has an exit-to-throat area ratio of 6.79. When the tunnel is running, a Pitot tube mounted in the test section measures 1.448 atm. What is the reservoir pressure for the tunnel?
Answers
The reservoir pressure for the tunnel is 244.7 kPa.
The nozzle of a supersonic wind tunnel has an exit-to-throat area ratio of 6.79.
When the tunnel is running, a Pitot tube mounted in the test section measures 1.448 atm.
The formula to calculate the reservoir pressure for the tunnel is as follows:
P_r = P_t / ((1 + (k - 1) / 2 * M_t²)^(k / (k - 1)))
Where: P_r = Reservoir pressure
P_t = Pitot tube pressure
M_t = Mach number at the throat
k = Specific heat ratio (C_p/C_v)
Supersonic wind: Supersonic wind is the airflow that travels through the air at a velocity higher than the speed of sound. This phenomenon is referred to as supersonic flight and, depending on the object's speed, can cause shock waves.
Reservoir pressure:Reservoir pressure refers to the pressure of a fluid that is stored in a container or reservoir at a specific height or elevation from the point of discharge. It represents the amount of force or pressure exerted by the fluid in the reservoir.
The given area ratio A_2/A_1 = 6.79 can be used to find the Mach number at the throat.
For isentropic flow in the nozzle,M_t = sqrt[(2/(k - 1)) * ((P_t / P_r)^((k - 1)/k) - 1)]
1.448 atm can be converted to kPa by multiplying it by 101.3 kPa / 1 atm: 1.448 atm = 146.8 kPa
The Mach number at the throat is calculated using the formula:M_t = sqrt[(2/(k - 1)) * ((P_t / P_r)^((k - 1)/k) - 1)]
=> M_t = sqrt[(2 / (1.4 - 1)) * ((146.8 kPa / P_r)^((1.4 - 1)/1.4) - 1)]
=> M_t = sqrt[1.2 * (146.8 kPa / P_r)^0.286 - 1]
The area ratio can be calculated as:A_2 / A_1 = (1 / M_t) * (((2 + (k - 1) * M_t^2) / (k + 1))^((k + 1) / (2 * (k - 1))))
=> 6.79 = (1 / M_t) * (((2 + 0.4 * M_t^2) / 1.4))^1.4
=> M_t = 1.717
Using the value of M_t in the equation to calculate the Mach number at the throat, the following equation is obtained: M_t = sqrt[(2 / (1.4 - 1)) * ((146.8 kPa / P_r)^((1.4 - 1) / 1.4) - 1)]
=> 1.717 = sqrt[(2 / (0.4)) * ((146.8 kPa / P_r)^(-0.286))]
=> (1.717)^2 = (2 / 0.4) * ((146.8 kPa / P_r)^(-0.286))
=> (146.8 kPa / P_r)^0.286 = 0.667
=> 146.8 kPa / P_r = 0.667^(1 / 0.286)
=> P_r = 244.7 kPa
Therefore, the reservoir pressure for the tunnel is 244.7 kPa.
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Related Questions
noooo plssschvwekjshdjkshdjkshdjksahdk
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Answer:
chehdhfhfhd
Explanation:
fjrjshrhdhr
Identify and briefly describe four types of requirements that may be defined for a computer base system
Answers
functionality required of the system, Quality characteristics that aren't useful, like performance or security, features that cater to consumer demands For the system to function, there are network, hardware, and software requirements.
What specifications apply to computer systems?The minimum and/or maximum hardware and software criteria that a system or application must meet in order to operate effectively are known as system requirements.
What are the database's system requirements?System requirements are a list of the features that a system must have in order to fulfill the needs of the customer. [1] System requirements are a broad and specific topic that can be applied to many different objects.
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In a four-stroke engine, the piston rises in the cylinder, which triggers the _______ stroke.
intake
compression
exhaust
power
Answers
Answer: It is power stroke
the joint force engineer manages several engineering functions which include:
Answers
The correct answer is The combined force engineer oversees a number of engineering tasks, such as: (1) Scheduling and directing the execution of.
The Air Force and Navy are basically the only branches that offer major computer science work, despite the fact that all branches offer information technology training and professions that are excellent prerequisites for the hard-core business of computer science.
These professionals design, create, evaluate, and write programmes that are essential to our ability to wage war. They make sure we have the software and programmes required to carry out our duties successfully, from maintenance tracking applications to tools that organise and show intelligence data. Finding your first job can be challenging if you want to work as a software developer. Getting an interview involves a number of criteria.
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Which of the following is an implication of low
variety?
A. low unit cost
B. flexibility needed
C. high complexity
D. matching customers specific needs
PLEASE EXPLAIN WHICH IS CORRECT WITH EXPLANATION
Answers
The correct option for the implication of low variety is B) Flexibility needed. Variety refers to the number of different products, services, or activities that an organization offers. High variety means that a company offers a wide variety of products or services, while low variety means that a company provides a limited range of products or services.
One of the implications of low variety is that customers have limited options. They are restricted to purchasing only those goods and services that the company offers, which may not match their requirements or preferences. This may lead to losing customers to rivals who offer a greater variety of goods and services.
In the case of low variety, it is critical to have the required flexibility. Customers may ask for certain specific goods or services that are not provided by the company. To meet customer requirements, the company should be adaptable and able to rapidly respond to customer requests by expanding its product line. As a result, low variety necessitates the need for flexibility.
The other given options are not valid. Low unit cost is not related to low variety. Unit cost may be affected by economies of scale and other factors, but it is not directly related to variety. High complexity is not related to low variety as well. As the range of goods and services offered by the company increases, the complexity of the company's operations and management also increases. Matching customers' specific needs is partially correct because the company cannot match customer specific needs in low variety. In low variety, the company has a limited range of goods and services, so it is not possible to fulfill all the customers’ specific needs.
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5. What is the biggest danger when using
electric drills?
O A. Using the wrong size bit for the hole
required can ruin the drill.
O B. The bit could get caught and throw the
user.
O C. The bit coming loose in the drill can
cause a loss of torque.
O D. Static electricity can build up and
deliver an electric shock to the user.
Answers
Answer:
Static electricity can build up and
deliver an electric shock to the user drilling with an electric drill or any drill can create static electricity but with electric drills the static electricity can react with the drills power supply creating a short circuit proceeding to shock you which is why electric drills have rubber grips around them to INSULATE the shock if It does happen (also that's why the drills mostly are made up of non conductive materials.)
I want to solve the question
Answers
Answer:
yes.
Explanation:
You are given the following three simple Turing Machines that implement the logic operations NOT, AND, and OR, and their connections are labeled with the letters a through h: 2TNOT I AND TOR Connect together these simple machines with the inputs 1, 2, and 3 to form the logical function exactly as shown below (no simplifying the function): NOT ((1 AND 2) OR 3) input 3 connects to input 1 connects to c input 3 connects to f o input 2 connects to d Oh connects to a ne connects to g Oinput 1 connects to a Ob connects to f O b connects toc
Answers
We must link the inputs and outputs of the machines in accordance with the logic diagram provided in order to use the simple Turing Machines provided to create the logical function "NOT ((1 AND 2) OR 3)".
Which of the following does not make up a Turing machine?Reason: Alan Turing demonstrated in 1936 that there is no general algorithm that can solve the halting problem for all conceivable program-input pairs. 3. Which of the following does not make up a Turing machine? Explained: One of the finitely many states of the Turing machine is stored in a state register.
What four steps would a Turing machine perform on the input tape?The following procedures are supported: moving the tape head left, moving the tape head right.
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Participating in extracurricular activities in high school helps:
Answers
Answer:
Develop social skills
Explanation:
Answer:
strengthen your college applications
Explanation:
Compression in a scroll compressor is achieved by the interaction of an orbiting ______ and a stationary ______.
Answers
Answer:
Compression in a scroll compressor is achieved by the interaction of an orbiting scroll and a stationary scroll.
Explanation:
1.3. If the surface tension coefficient of a fluid is 0,07 N/m and the radius
of the droplet is 2,5 mm. calculate:
1.3.1 surface tension force
(2)
1.3.2 difference in pressure of the droplet
(1)
Answers
Answer:
A) F = 0.011 N
B) ΔP = 5.6 N/m²
Explanation:
We are given;
surface tension coefficient; S = 0.07 N/m
Radius; r = 2.5 mm = 0.025 m
A) Formula to find the surface tension force(F) is given by;
F = SL
Where L is effective length = 2πr
F = 0.07 × 2π × 0.025
F = 0.011 N
B) Formula for difference in pressure droplet is;
ΔP = 2S/r
Thus;
ΔP = (2 × 0.07)/0.025
ΔP = 5.6 N/m²
most microbrowsers allow you to navigate or interact with webpages using gestures instead of tapping icons.
Answers
Microbrowsers allow users to navigate or interact with webpages using gestures instead of tapping icons. This feature enhances the browsing experience on mobile devices.
Micro browsers are web browsers that are designed to display web content on small screens. These browsers are optimized to work on mobile devices like smartphones and tablets. One of the features of these browsers is the ability to navigate or interact with webpages using gestures instead of tapping icons. This allows users to browse the web without the need to click on small buttons or links.
Gestures like swiping and pinching can be used to zoom in and out of webpages, while scrolling up and down is done by flicking the screen. This feature is essential for mobile browsing because it provides an intuitive way of interacting with web content, making it easier for users to find what they are looking for. Overall, gestures enhance the browsing experience on mobile devices and make micro browsers an essential tool for mobile web browsing.
A web browser intended for use on a mobile device, such as a personal digital assistant (PDA), is known as a mobile browser. Mobile browsers are designed to display Web content at its best on portable devices with small screens.
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which hammer is used when a great deal of striking power is required
Answers
Answer: A hand-held sledgehammer
Answer:
The answer to your question is a sledgehammer
Explanation:
A hand-held sledgehammer can be used when a great deal of driving power is required.
I hope this helps and have a wonderful day!
For each equation, determine whether x and y are directly proportional (that is, if the equation shows direct variation). if so, then find the constant of proportionality (the constant of variation). (a) y=7x-1/5, (b) 2x=y.
Answers
(a) The equation y = 7x - 1/5 does not represent direct variation.
(b) The equation 2x = y represents direct variation.
(a) Does the equation y = 7x - 1/5 exhibit direct variation?(b) Is there a direct variation in the equation 2x = y?In the equation, y = 7x - 1/5, the presence of a term involving x and a constant term (-1/5) indicates that it does not represent direct variation. Direct variation occurs when the equation is in the form y = kx, where k is the constant of proportionality. In this case, the equation y = 7x - 1/5 can be rearranged to y = 7x + (-1/5), showing that the coefficient of x is 7, but there is an additional constant term of -1/5. Therefore, x and y are not directly proportional in this equation.
On the other hand, the equation 2x = y represents direct variation. It can be rewritten as y = 2x, which is in the form y = kx, indicating that x and y are directly proportional. In this case, the constant of proportionality is 2, as the coefficient of x.
Direct variation occurs when two variables are related in a way that can be represented by a linear equation of the form y = kx, where k is the constant of proportionality. When an equation is not in this form and includes additional terms or coefficients, it indicates that the variables are not directly proportional. It's important to analyze the structure of the equation to determine if direct variation exists or not.
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design process 8 steps with definition
Answers
Answer:
Step 1: Define the Problem.
Step 2: Do Background Research. .
Step 3: Specify Requirements. .
Step 4: Brainstorm, Evaluate and Choose Solution.
Step 5: Develop and Prototype Solution.
Step 6: Test Solution.
Step 7: Does Your Solution Meet the Requirements?
Step 8: Communicate Results.
can u tell me the definition tho?
palled correctly as “though” which is an alternate form of “although”) at the end is informal usage. It's better placed before “she seems better today
___________________ is the primary classification trait used to explain how scientists divide rocks into the three classification groups.
answer choices
- Composition
- Formation
- Location
- Texture
Answers
1. Looking at the case study provided under the Companion Material section, what is the main problem that is addressed in this case study? Maintenance workers painted over the pipes. Engineers lost all of their work because of the flood. The water pipes broke and flooded the space center. There was no paperwork for the maintenance work done on the pipes.
Answers
Incomplete question. However, I provided information that could assist you in identifying the main problem or issue addressed in any case study.
Explanation:
First, note that a case study is simply a learning aid that allows one to learn from a real-life scenario.
To determine the main problems of a case study one needs to:
Read the case as many times as possible to become familiar with the message been expressed. For example, by highlighting or underlining the most important facts it can help you to discover the main problem or issue. Check for any facts provided in the case study, by so doing you can identify the most important problems.Thus, by taking these few steps you may be able to determine the main problem in that case study.
A person who is so miserable that he or she can see no reason for living, BEST fits which of the following definitions of abnormality?
A) deviance
B) distress
C) dangerousness
D) dysfunction
Answers
Based on the given scenario of a person who is so miserable that they can see no reason for living, the BEST fitting definition of abnormality is B) distress.
Distress refers to the experience of significant emotional or psychological pain, which this individual is clearly facing as they find no reason to live. The other options do not fit as well:
A) Deviance: This refers to behavior that deviates from societal norms or expectations. While the person's thoughts may be considered deviant, their emotional state is more accurately described as distress.
C) Dangerousness: This term implies that the person poses a risk to themselves or others. While the individual might potentially be at risk, the focus in this scenario is on their emotional state, which is distress.
D) Dysfunction: Dysfunction refers to an impairment in the individual's ability to function effectively in daily life. While their misery might lead to dysfunction, the primary focus here is on their emotional distress.
In summary, the most fitting definition of abnormality for this person is B) distress, as they are experiencing significant emotional pain.
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The steel-frame structural support was a main feature in the development of __________. Group of answer choices
Answers
The steel-frame structural support was a main feature in the development of t the floors, roof, walls and skyscraper.
What structure is aided by a metal frame?Steel frame is known to be a form of a building method that is used along with a skeleton frame that is made up of steel columns and I-beams.
Conclusively, This is often used in the construction of grid to aid the floors, roof and walls of any kind of building. It is also used in the construction of skyscraper.
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I'm interested in knowing if there are two adjacent strings in a list that are very similar to each other. For instance, "Zach" and "Zack" are only one character apart.
Write a function, named "CloseEnough" that takes a const reference to a vector of strings and an int. The vector is a list of strings (each of the same length). The int represents how many characters can be different between any two strings next to each other. This function should return the index (an int) of the string that is within the second arguments distance to the next string in the vector. If no index fulfills this criteria, it should return -1
Answers
Here's a function called Close Enough which takes a const reference to a vector of strings and an int. This function is used to check if there are two adjacent strings in a list that are very similar to each other by determining the number of characters that can be different between any two strings next to each other.
The function starts by iterating through the vector of strings from the first to the second to last string. For each string, it then counts the number of differences between it and the next string by comparing the characters at each position.
If the number of differences is less than or equal to the given integer n, the function returns the index of the current string. If there is no such index, the function returns -1.
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Which step in the reverse-engineering process involves the identification of subsystems and their relationship to one another?
Answers
The answer is analyze
i. Draw the velocity diagram for the instant shown and determine the velocity of
sliding of the piston relative to the cylinder and the angular velocity of link
DP.
ii. Draw the acceleration diagram for the instant shown and determine the
acceleration of sliding of the piston relative to the cylinder and the angular
acceleration of link DP.
Answers
Answer:
?????????????????????????????????????
Which of the following situations may cause a vacuum?
A. Shock waves B. Pressures below the atmospheric level
C. High-temperature water D. Ultrasonic waves
Answers
Option B is correct, Pressures below the atmospheric level is the situation which cause a vacuum.
A vacuum is a state or space devoid of matter or gas. It is characterized by a pressure lower than the atmospheric pressure.
When the pressure drops below the atmospheric level, a vacuum is created.
Shock waves do not cause a vacuum.
Shock waves are rapid pressure disturbances that result from sudden changes in pressure, such as explosions or supersonic objects.
They create high-pressure zones, not vacuum.
High-temperature water does not cause a vacuum.
High temperatures can generate steam or vapor, but it does not create a vacuum.
Ultrasonic waves also do not cause a vacuum.
Ultrasonic waves are high-frequency sound waves that propagate through a medium, but they do not result in the creation of a vacuum.
Therefore, the only option that can cause a vacuum is Pressures below the atmospheric level.
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navigate to the project directory: (type this into your cmd window, you're aiming to navigate the cmd window to the repository you just downloaded)
Answers
To navigate to the project directory in the cmd window, you can use the "cd" command followed by the path to the repository you just downloaded.
For example, if the repository is located on your desktop, you can type "cd C:\Users\YourUserName\Desktop\RepositoryName" and press enter. This will change the current directory in the cmd window to the project directory.
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FOR BRAINLIST !!
B 5. An adaptation is a hereditary characteristic within some organisms in a population.
There are structural, behavioral, and functional adaptations. Which of the following is
NOT a behavioral adaptation?
Answers
In Female, the twenty-third pair of chromosomes is called in in
Answers
between what two elements does signal detection differentiate?
Answers
According to the question, signal detection differentiates between signal and noise.
What is signal?
Signal is a system for communicating information between two or more entities. It can be used for a wide range of applications, including the transmission of audio and video signals, data communications, and other types of information. Signals can be transmitted through various mediums, such as radio waves, electrical wires, fiber optics, and satellites. The signal is typically encoded in binary form, which consists of a sequence of 1s and 0s. These codes can be used to represent words, images, and other types of data. Signal processing is the process of receiving, interpreting, manipulating, and transmitting the signal. It involves a variety of techniques, such as digital signal processing, signal synthesis, signal analysis, and signal filtering. Signal processing is used in a wide range of applications, including communication, medical imaging, and radar.
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Naomi needs to test an application that will be accessed by multiple users simultaneously. She is planning to use LoadRunner to test the performance of the application. How can a testing tool such as LoadRunner help her with performance testing?
A.
by using a large number of testers
B.
by increasing the number of test cases
C.
by automating your test cases
D.
by creating a number of virtual users
Answers
Which three items below should a driver be able to identify under the hood of a car?
Answers
Answer:
Engine oil level.
Brake fluid.
Power steering fluid.
Tech A says that a torsion bar is used to operate the control valve in a hydraulically controlled power steering system. Tech B says that in
the neutral position, the pressure in the power steering system is very high. Who is correct?
Select one:
A. Tech A
B. Tech B
C. Both A and B
D. Neither A nor B
Answers
Answer:
Tech A
Explanation:
Becuz A is very good
Tech A and B say about a torsion bar that in the neutral position, the pressure in the power steering system is very high. Tech A is correct. The correct option is A.
What is a torsion bar?The torsion bar is one such bar that possesses the tendency to return to its normal and original position when it is twisted firmly back. They cannot be controlled with the help of frames that are there between the lower control arms of the bar.
Torsion bars are such bars that do not have the characteristics of getting attached between the lower control armed frames. The common spring configurations on SLA systems, surprisingly, comprise a torsion bar, between the control arms, and on the upper control arm, according to the context of this subject. These all have some distinctive qualities that set them apart from one another.
Therefore, the correct option is A. Tech A.
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