Newcomen invented the internal-condensing jet for obtaining a vacuum in the cylinder and an automatic valve gear. By using steam at atmospheric pressure, he kept within the working limits of his materials.
Internal-condensing jet for creating a vacuum in the cylinder and automated valve gear were both created by Newcomen. He stayed within the parameters of his materials' usable operating pressure by employing steam at atmospheric pressure. The Newcomen-efficiency engine's was pegged at 0.5 percent [5]. This low number results from the cooling down of the cylinder and piston during each condensation, which must then both be heated up again before steam can once more fill the cylinder. The first atmospheric steam engine to be commercially successful was created by Newcomen in 1712. Using the vacuum that condensed steam produced, the engine pushed water. It became a crucial part of Britain's Industrial Revolution because it was a significant way to drain water from deep mines.
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the 1.5-kg uniform slender bar ab is connected to the 3-kg gear b that meshes with the stationary outer gear c. the centroidal radius of gyration of gear b is 30 mm. knowing that the system is released from rest in the position shown, determine (a) the angular velocity of the bar as it passes through the vertical position, (b) the corresponding angular velocity of gear b.
Since we only support 32-word searches, "velocity" and any subsequent terms were not taken into account.
When an object rotates or circles around an axis, its angular velocity is the rate at which the angle between the two bodies changes. The angle that is made by a line on one body and a line on the other in the illustration represents this displacement.
A Ferris wheel, a race car driving in circles, and a roulette ball on a wheel are a few examples of angular velocity. The object's angular velocity also serves as a representation of the object's angular displacement with respect to time.
As a vector number that indicates an object's angular speed or rotational speed as well as the axis around which it is spinning, angular velocity is defined as the rate of change of angular displacement.
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technician a says that if the pcv valve were defective or clogged, the engine could idle rough. technician b says that the engine may stall. which technician is correct?
Neither technician A nor B. The engine could idle poorly if the pcv valve were broken or clogged, according to mechanic A. The engine may stall, explains mechanic B.
The PCV valve prevents air and fuel from the crankcase from escaping into the atmosphere by rerouting them through the intake manifold to the cylinders. Your car will perform poorly as the PCV valve begins to malfunction. The engine may stall out or there may be a buildup of pressure in the exhaust as a sign of this. The malfunctioning PCV valve may not completely close, allowing oxygen to enter the combustion chamber. The PCV valve is unquestionably one of the most crucial components of your car, and while it is technically possible to drive your car with a damaged valve, it is not advised because it will eventually corrode the engine.
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can someone write an essay for me for
Scenario 1: Building a Website or Scenario 2: Printing Band Posters. its for digital photography
The essay could go as follows:
Creating a website for digital photography can be a challenging yet rewarding experience. It requires attention to detail, an understanding of HTML coding, and a good eye for design. Having a basic knowledge of HTML and CSS is essential to building a website that looks great and functions well. Additionally, you'll need to think about hosting, domain names, and any other web-related tasks. With the right tools, you can create a website that showcases your work and lets you share your talent with the world.
The definition of an essay is ambiguous and overlaps with that of a letter, a paper, an article, a pamphlet, and a short fiction. Generally speaking, an essay is a piece of writing that presents the author's own argument.
An essay's body, which includes your in-depth analysis and supporting arguments, introduction, which introduces your topic and thesis statement, and conclusion, which summarizes your main points.
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The bottom hole in the dam is blocked by a flat rectangular shield with a width of -6 m. The water depth in the upstream h1 = 23 m, the depth in the downstream h2 = 11.5 m, the height of the bottom hole t = 17.25 m, the angle of inclination a = 40 °. The sewing can rotate around the axis, which is projected to point A. Determine the force T required to raise the shield.
To determine the force required to raise the shield, we can use the principle of static equilibrium.
In this case, the shield is being acted upon by two forces: the weight of the shield, which is a force acting downward, and the force T, which is a force acting upward.
The weight of the shield can be calculated using the formula: W = mg, where W is the weight, m is the mass of the shield, and g is the acceleration due to gravity. The mass of the shield can be calculated using the formula: m = ρV, where ρ is the density of the material the shield is made of and V is the volume of the shield.
The volume of the shield can be calculated using the formula: V = Bh, where B is the width of the shield and h is the height of the shield. In this case, B = -6 m and h = t = 17.25 m, so V = (-6 m)(17.25 m) = -106.5 m^3.
Plugging this value into the formula for mass, we get: m = ρ(-106.5 m^3).
What is principle of static equilibrium?The principle of static equilibrium states that the sum of the forces acting on an object must be equal to zero in order for the object to be in equilibrium.
As a result, the force T required to raise the shield can be calculated using the principle of static equilibrium. We can set up the following equation: T - W = 0, where T is the force acting upward and W is the weight of the shield acting downward.
Substituting in the values for T and W, we get: T - (m*g) = 0.
Solving for T, we get: T = m*g.
Therefore, the force required to raise the shield is equal to the mass of the shield multiplied by the acceleration due to gravity.
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scan millions of websites to identify individual webpages that contain a specific word or phrase and then attempt to rank the results from most useful to least useful
Search Engines scan millions of websites to identify individual web pages that contain a specific word or phrase and then attempt to rank the results from most useful to least useful.
For your content to show up in search results, search engines must first be able to see it.
In order to operate, search engines must do three essential tasks:
Crawling: Search the Internet for content while reading the code and content of each URL you come across.
Indexing: Archive and arrange the information gathered through the crawling operation. After being indexed, a page has a chance of responding to pertinent searches.
Ranking: Provide the material that best responds to a searcher's query; therefore, results are ranked from most to least pertinent.
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A furnace is located next to a dense array of cryogenic fluid piping. The ice-covered piping approximates a plane surface an average temperature of T, = 0°C and an emissivity of E, = 0.6. The furnace wall has a temperature of T;= 200°C and an emissiv- ity of &r=0.9. To protect the refrigeration equipment and piping from excessive heat loading, reflective aluminum radiation shielding with an emissivity of Es = 0.1 is placed between the piping and the furnace wall, as shown in the schematic. Assume all surfaces are diffuse-gray. Dense piping array, T, = 0°C, Furnace wall T = 200°C, E = 0.9 P & = 0.6 000000000000
Installation criterion TIN < 30°C -Radiation shields, N Es = 0.1 If the temperature of the shield closest to the piping Ts, y must be less than 30°C, how many radiation shields, N, must be installed between the piping and the furnace wall?
Systems utilized in a variety of industrial applications that need for extremely low temperatures, often about -300°F (150°C) or below, are referred to as cryogenic pipes.
Austenitic stainless steel is used to build the stainless SEMIFLEX liquid nitrogen pipe, which is available in sealed and dynamic vacuum and offers the lowest cool down and steady state heat loss for improved thermal performance. Direct impingement with a cryogen, such as liquid nitrogen or carbon dioxide (CO2), allows cryogenic systems to quickly remove heat from the items being processed. CO2 is sprayed directly onto the product and is a consumable refrigerant. A stainless steel inner pipe and an outside stainless steel pipe make up vacuum jacketed pipe. The cryogenic liquid is transported through the inner pipe. It is covered with many layers of super insulation that are constructed by alternating between layers of a non-conductive spacer and a heat barrier.
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two mod-10 synchronous counters are cascaded together. if the input clock frequency is 100 khz, what is the output frequency of the second counter?
The Large counter applications requiring several stages of cascaded counters include digital time clocks, frequency dividers, and synchronization circuits.
Explain about counter?In the beginning, a Counter is a digital sequential logic device that, in response to an input pulse, will cycle through a predetermined state (for instance, counting up and down). Every computer and electronic system makes use of them.This is a basic explanation, but it's important since, as we all know, the culture of computers and electronics is expanding in today's society. The only language that computers can understand is binary, and counters operate using binary codes. Decide whether time is lagging or ahead is the counter's primary function. We can distinguish between an LED flashing and continuing to light it by setting the counter in any electronics circuit to a desired frequency.Since the digital world is used to create many types of counters, we never even consider it without one.To learn more about counter refer to:
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1. Design an algorithm and a flowchart which generates even numbers between 1000 and
2000 and then prints them in the standard output. It should also print total sum.
Here is an algorithm for generating and printing even numbers between 1000 and 2000, along with their sum:
Set a variable total to 0, and a variable current to 1000.While current is less than or equal to 2000, do the following:-> If current is even, print it to the standard output.-> Add current to total.-> Add 2 to current.Print the value of total to the standard output.Here is a flowchart (attached) that outlines the steps of this algorithm:
The dresser has a weight of 80 lb and is pushed along thefloor. If the coefficient of static friction at Aand B is μs = 0.3 and thecoefficient of kinetic friction is μk =0.2, determine the smallest horizontal force P needed tocause motion. If this force is increased slightly, determinethe acceleration of the dresser. Also, what are the normalreactions at A and B when it begins to move?
The normal reactions at A and B when the dresser begins to move will be:
Normal Reaction at A = μs * mg = 0.3 * (80 lb) * 32.2 ft/s² = 96.6 lb
Normal Reaction at B = μk * mg = 0.2 * (80 lb) * 32.2 ft/s² = 64.4 lb
What is reaction?
Reaction is an action taken in response to a particular stimulus. It is the way in which people interact with the world around them. Reactions can be physical, mental, or emotional in nature. It is the way in which individuals respond to situations, people, and events. Reactions can range from positive to negative, and can even be neutral. Reactions are affected by a person's past experiences, beliefs, values, and emotional state. It is also influenced by external factors such as the environment, other people, and media. Reactions are an important part of social interaction and communication, as they provide feedback and help build relationships. They also provide insight into a person's personality, character, and values. Reactions are the building blocks of relationships, and it's important to be aware of how one's reactions affect others.
The smallest horizontal force P needed to cause motion is:
P = μs * mg = 0.3 * (80 lb) * 32.2 ft/s² = 96.6 lb
When the force is increased slightly, the acceleration of the dresser will be:
a = (P - μk * mg) / m = (96.6 - 0.2 * (80 lb) * 32.2 ft/s²) / (80 lb) = 7.7 ft/s²
The normal reactions at A and B when the dresser begins to move will be:
Normal Reaction at A = μs * mg = 0.3 * (80 lb) * 32.2 ft/s² = 96.6 lb
Normal Reaction at B = μk * mg = 0.2 * (80 lb) * 32.2 ft/s² = 64.4 lb
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you are the network administrator for a small consulting firm. the firm has recently rolled out a new intranet site, and you are responsible for configuring the dns.you are able to connect to the intranet site by using the ip address, but you cannot connect by using the hostname.which of the following do you need to configure to access the site with the hostname?
You need to configure a DNS A record for the intranet site's hostname to map it to the correct IP address.
What is DNS?
DNS, or Domain Name System, is an internet protocol used to translate domain names, such as www.example.com, into IP addresses, such as 192.168.2.1, that computers can understand and use to communicate with each other. DNS acts as a directory service, providing a link between domain names and their associated IP addresses, which are stored and managed in a distributed database system. DNS is essential for the functioning of the internet, allowing users to access websites and services without having to remember their numerical IP addresses. DNS works by querying a distributed network of DNS servers, which maintain a database of IP addresses and their corresponding domain names. When a DNS query is made, the DNS server looks up the requested IP address in its database and returns it to the user. DNS is an important part of the internet infrastructure and is used by many different types of services, such as email, web hosting, and streaming services.
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NAT has been configured to translate source addresses of packets for the inside part of the network, but only for some hosts as identified by an access control list. Which of the following commands indirectly identifies the hosts?
A. ip nat inside source list 1 pool barney
B.ip nat pool barney 200.1.1.1 200.1.1.254 netmask 255.255.255.0
C.ip nat inside
D. ip nat inside 200.1.1.1 200.1.1.2
The correct answer is A. ip nat inside source list 1 pool barney commands indirectly identifies the hosts.
A. With dynamic NAT, the initial packet flow from the inside network causes the entries to be produced. Network address translation (NAT) functions by converting private addresses to the NAT router's public address. -Hosts connected to the private network share a pool of addresses or the NAT router's IP address. -The NAT router associates private IP addresses with port numbers. Choosing the internal and outside interfaces is the initial stage in NAT configuration. Beyond that, whether you are configuring static NAT or dynamic NAT affects the setup. Simply add the necessary mapping entries to the NAT table for static NAT.
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actuators (outputs) are being discussed. technician a says they are variable resistance/ reference-types, switches, and thermistors. technician b says they convert electrical current into mechanical action. who is correct?
Actuators (outputs)are being discussed Technician.An actuator is a device that produces work by converting energy from the source.
What is the output of actuator?The actuator reacts to the control signals sent to it by the control element, and the control system regulates the output signal.For example, the input for electric and piezoelectric actuators is electric current or voltage, the input for hydraulic actuators is an in compressible liquid, and the input for pneumatic actuators is air.Mechanical energy is always the output.An actuator is a device that transforms energy and signals into motion when they enter the system.It can cause either linear or rotary motion.A device that transforms energy and signals entering the system into motion is called an electric linear actuator.To learn more about actuators refer
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which is one of the best structures for holding oil? group of answer choices anticline syncline normal fault reverse fault
An "anticlinal" trap is one of the most effective structures for forming a petroleum reservoir. An impermeable layer of rock forms a cap over a layer of porous permeable sedimentary rock in this location. If petroleum is present, it drifts upward and becomes trapped within the anticline fold.
What is a anticlinal trap structure?
An anticline is the structural-trap formed by the rock strata folding into an arch-like shape. The rock layers in an anticlinal trap were originally laid down horizontally before folding into an arch-like shape known as an anticline due to earth movement.
This type of structure can be seen on a seismic section, but because seismic sections are typically 'time sections,' the actual structure can be obscured by velocity changes above the anticline. The structural contours of an anticline form closed loops.
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If you were giving a speech on prostate cancer, which of the following would be a good way to begin the speech and capture the audience's attention?
A good way to begin the speech and capture the audience's attention is Telling a story about someone who has suffered from the illness
What is meant by speech?exchanging spoken words for the purpose of communicating or expressing ideas. An exchange of words; an utterance; a speech, typically delivered in public; an address. The air stream that leaves the lungs and passes via the trachea, nasal cavity, and oral cavity is what produces speech. It involves the phonation, oro-nasal process, articulation, and the first four processes.Put your speech's components in order of logic: introduction, body, and conclusion. Before giving a speech, you should often practice and rehearse it. Or, rehearse in front of a mirror while asking others to serve as your audience. To assist you pace your speech, be sure to utilize a timer.Informing, instructing, entertaining, and persuading are the four main purposes of speeches.To learn more about speech refer to:
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Which of the following is NOT true about the Internet of Things (IoT) devices?
Millions of IoT devices connected to the Internet can be harnessed as part of a botnet.
Device manufacturers focus on the device functionality and not security.
Attackers may inject bad data into an IoT network through an IoT device like a sensor.
These small devices are easily patched by the user, whether consumer or industrial.
Answer:
These small devices are easily patched by the user, whether consumer or industrial.
One of the main challenges with IoT devices is that they are often difficult or impossible to update or patch. Unlike traditional computers or smartphones, which can be easily updated with security patches and other software updates, many IoT devices are not designed to be easily updated by the user. This is because they may have limited processing power, memory, or storage, and may not have the capability to download and install software updates. As a result, many IoT devices are vulnerable to security threats, and attackers may be able to exploit vulnerabilities in these devices to gain access to an IoT network. In order to protect against these threats, it is important for device manufacturers to focus on security when designing IoT devices, and for users to carefully consider the security of the devices they purchase and use.
(Please mark as brainliest!)
Explanation:
What are the three different methods of testing?
Answer: Unit, integration, and system testing.
Which of the following types of risk would organizations being impacted by an upstream organization's vulnerabilities be classified as? Group of answer choices Legacy risk Multiparty risk External risk Multi-network risk
Which of the following types of risk would organizations being impacted by an upstream organization's vulnerabilities be classified as?
Group of answer choices
Legacy risk
Multiparty risk
External risk
Multi-network risk
A type of risk which organizations being impacted by an upstream organization's vulnerabilities would be classified as is: B. multiparty risk.
What is vulnerability?In Computer technology, vulnerability can be defined as any form of weakness, flaw, or defect that is found in a computer system, network, website, or software application, which can be exploited by an attacker (hacker), in order to gain an unauthorized access and unrestricted privileges to sensitive user data and information that are stored in a computer system.
What is a multiparty risk?In Computer technology, a multiparty risk can be defined as a type of risk and vulnerabilities that originates from an upstream business organization and eventually negatively affects or impacts other business organizations that are associated with it.
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please solve using c++ and the Backtracking Recursion method
must use the starter code(link) down below
Given a positive integer n, write a function that finds all ways of writing n as a sum of nonzero
natural numbers. For example, given n = 3, you’d list off these options (how these 4 terms ordering
does not matter):
3 : 1 + 2; 2 + 1; 1 + 1 + 1
In particular, your task is to finish the following function in the starter code
void printSumsRec(int n, vector &soFar) {
// TO DO... Your codes below
}
Backtracking is an algorithmic strategy for solving problems recursively by trying to create a solution progressively, one component at a time, and discarding those solutions that fail to fulfil the constraints of the issue at any point in time.
Recursion is used by backtracking to address its issues. To achieve this, it looks into every scenario that might arise from an issue until the best and most practical answer is discovered. When a function calls itself repeatedly to break an issue into smaller sub-problems, it engages in recursion and eventually reaches the base case. Backtracking is a generic algorithmic strategy that takes into account looking through each and every combination in order to address a computational issue. By calling a duplicate of itself and resolving the original problem's smaller subproblems, a recursive function solves a specific problem. Every time we go back, we remove the options that aren't going to lead to the solution and move on to the options that could.
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what is the mda and visibility criteria for a straight-in loc/dme rwy 21 approach at portland international in a category b airplane? a. 700 ft. msl; visibility 1 nm. b. 1,120 ft. msl; visibility 1 sm. c. 700 ft. msl; visibility 1 sm.
b. 1,120 ft. MSL; visibility 1 sm.
According to the Federal Aviation Administration (FAA) Instrument Procedures Handbook, the minimum descent altitude (MDA) for a straight-in localizer/distance measuring equipment (LOC/DME) runway 21 approach at Portland International Airport in a category B airplane would be 1,120 feet above mean sea level (MSL). The visibility requirement for this approach would be 1 statute mile (SM). Therefore, the correct answer to your question is: b. 1,120 ft. MSL; visibility 1 sm.
MDA INFORMATIONIt's important to note that the MDA and visibility requirements for an approach can vary depending on the specific approach being flown and the equipment available at the airport. It's also worth mentioning that the MDA and visibility requirements must be met to fly the approach. If the actual conditions at the airport are below these minimums, the approach cannot be flown, and the pilot must either execute a missed approach or proceed to an alternate airport.
The minimum descent altitude (MDA) is the lowest altitude that an aircraft is allowed to descend to during an instrument approach. It is typically expressed in feet above mean sea level (MSL) and is established to provide the pilot with an apparent visual reference of the approach path and the surrounding terrain. The MDA is determined based on the type of approach being flown and the equipment available at the airport.
The MDA is not a decision altitude (DA), which is the altitude at which the pilot must decide to either land or execute a missed approach. The DA is typically higher than the MDA and is based on the height of obstacles in the approach path. It's important to note that the MDA is a minimum altitude, and the pilot is not required to descend to the MDA unless it is safe to do so. If the pilot cannot see the runway or the required visual references at the MDA, a missed approach must be executed. In other words, the MDA is the minimum altitude that must be maintained during an instrument approach unless the pilot can see the runway or the required visual references, in which case the pilot may continue the approach and land.
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Which of the following is an example of proprietary system software?LinuxMicrosoft Internet Explorer Microsoft OfficeMicrosoft Windows
Answer:
Microsoft Windows
Explanation:
Microsoft Windows is an example of proprietary system software. Proprietary software is software that is owned by a specific company or individual and is typically only available for use through a license from the owner. This is in contrast to open-source software, which is freely available for anyone to use, modify, and distribute. Microsoft Windows is a proprietary operating system developed and owned by Microsoft Corporation. It is not open-source and can only be used by individuals or organizations who have purchased a license from Microsoft.
Linux, Microsoft Internet Explorer, and Microsoft Office are not examples of proprietary system software. Linux is a free and open-source operating system, and Microsoft Internet Explorer and Microsoft Office are both proprietary software programs developed and owned by Microsoft Corporation.
part 91, subpart f prescribes operating rules governing the operation of large airplanes, turbojet-powered multiengine civil airplanes, and fractional ownership program aircraft not involving common carriage. the rules of this part do not apply to operations that are required to adhere to regulations under:
Large aircraft, turbojet-powered multiengine civil aircraft, and fractional ownership program aircraft are all subject to the operating regulations outlined in part 91, subpart F. Operations needed to comply with requirements under: are not subject to the rules of this component : Part 121, 125, 129, 135, and 137,
An air-breathing jet engine, the turbojet is frequently found in airplanes. It is made up of a gas turbine and a nozzle for propulsion. The gas turbine has a compressor, a combustion chamber, a turbine, and an air inlet with inlet guiding vanes (that drives the compressor). Fuel combustion in the combustion chamber heats the compressed air from the compressor before allowing it to expand via the turbine. The propelling nozzle expands the turbine exhaust, which is subsequently accelerated to a high speed to provide push. In the late 1930s, two engineers, Hans von Ohain in Germany and Frank Whittle in the United Kingdom, independently developed the idea into workable engines. Turbojets are only helpful in aviation because of their poor efficiency at low vehicle speeds. In rare instances, turbojet engines have been utilized to power vehicles other than airplanes, usually in an effort to break land speed records. When a vehicle is "turbine-powered," it most often means it has a turboshaft engine, a modified gas turbine engine that uses a second turbine to power a revolving output shaft. These are typical in hovercrafts and helos. On Concorde and the longer-range versions of the TU-144, which had to spend a lot of time travelling supersonically, turbojets were used.
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an architect has proposed a series of stepped roof beams to provide visual impact for a public building with high pedestrian traffic. geometric details of the transition region, as well as the entire beam loading, are presented in the figures below. the beam has a constant thickness and a yield strength . as the lead structural engineer for this project, you are tasked with approving or disapproving the design.
After previously finding comfort and support in a similar environment, men and exhibits now need to find their way to a new and constantly changing relationship with one another.
The connection between the museum and architecture is incredibly complex, and it can only be discussed in a relatively brief essay, with the possibility of misunderstandings resulting from incompleteness and simplicity. Discussion should be limited to common elements and specific issues. Since museum work encompasses such a broad range of goals, strategies, and accomplishments, the common ground could only be correctly described through a very thorough and comprehensive examination. Therefore, we will focus on a few issues that are crucial to the issues that face museums today. Environment can be summed up as the effects of all the living and non-living things that have an impact on human life. Non-living or abiotic elements include water, land, sunshine, rocks, and air, whereas all live or biotic elements are animals, plants, forests, fisheries, and birds. An environment is everything that surrounds us, including both living and nonliving objects like water, soil, plants, and animals that can adapt to their environment. The gift of nature is what sustains life on Earth. The four fundamental elements of the environment are the lithosphere, or rocks and soil, the hydrosphere, or water, and the biosphere, or living component of the environment.
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an architect has proposed a series of stepped roof beams to provide visual impact for a public building with high pedestrian traffic. geometric details of the transition region, as well as the entire beam loading, are presented in the figures below. the beam has a constant thickness and a yield strength . as the lead structural engineer for this project, you are tasked with approving or disapproving the design.
Men and exhibits must now navigate their way to a new and continuously evolving relationship with one another after traditionally seeking their solace and support in a similar atmosphere.
The connection between the museum and architecture is incredibly complex, and it can only be discussed in a relatively brief essay, with the possibility of misunderstandings resulting from incompleteness and simplicity. Discussion should be limited to common elements and specific issues. Since museum work encompasses such a broad range of goals, strategies, and accomplishments, the common ground could only be correctly described through a very thorough and comprehensive examination. Therefore, we will focus on a few issues that are crucial to the issues that face museums today.
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Assume array1 and array2 are the names of two arrays. To assign the contents of array2 to array1, you would use the following statement:array1 = array2;Group of answer choices
The statement "to assign the contents of array2 to array1, you would use the statement array1 = array2" is definitely false.
How do you establish a parallel relationship between two arrays?If you want to establish a parallel relationship between two or more arrays, it can be done by utilizing the same subscript value for each array specifically.
If a two-dimensional array is to be passed to a function, the parameter declaration in the function must include the number of columns; the number of rows is irrelevant since what is passed is, as before, a pointer to an array of rows, where each row is an array of 5 integers. So, the statement array1 = array2 would not be used in assigning the contents of array2 to array1.
Therefore, the statement "to assign the contents of array2 to array1, you would use the statement array1 = array2" is definitely false.
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malizegrades that receives a row array of test scores of arbitrary length and positive values, and produces two outputs
Normalize Grades:
function [norm Scores, average] = normalize Grades(scores)
m=max(scores);
norm Scores=(scores./m)*100;
average=mean(norm Scores);
end
scores = [90, 45,76,21,85,97,91,84,79,67];
[norm Scores, average] = normalize Grades(scores)
Calculate the average of the normalized scores by scaling the provided scores to a linear scale from 0 to 100. Find the highest score among the provided scores, then use that value to normalize each score between 0 and 100. Utilize mean to determine the normalized score average. Analyze the data set. It makes sense to "normalize" scores in order to make them fit under a normal curve if you assume that they should. Additionally, for conformity's sake, very high scores must be reduced downward during normalization. In either case, some information is lost and data are corrupted. Since grades may be given based on how far above or below 0 each final Z-score ends up after normalization, this approach substantially simplifies both determining one's relative standing in the class and assigning grades.
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to solve this challenge, generate the md5, sha1, sha256, sha512 hashes of this file, take the first character of each hash and enter the flag as fs{xxxx}.
Injection 300: SQL injection with raw MD5 hashes, One challenge at yesterday’s CTF was a seemingly-impossible SQL injection worth 300 points.
The point of the challenge was to submit a password to a PHP script that would be hashed with MD5 before being used in a query. At first glance, the challenge looked impossible. Here’s the code that was running on the game server:
<?php
require "inc/mysql.inc.php";
?>
<html>
<head><title>Oh, Those Admins!</title></head>
<body><center><h1>Oh, hi!</h1>
<?php
if (isset($_GET['password'])) {
$r = mysql_query("SELECT login FROM admins WHERE password = '" . md5($_GET['password'], true) . "'");
if (mysql_num_rows($r) < 1)
echo "Oh, you shall not pass with that password, Stranger!";
else {
$row = mysql_fetch_assoc($r);
$login = $row['login'];
echo "Oh dear, hello <b>$login</b>!<br/><br/>Oh, and here's the list of all Admins!<table border=1><tr><td>Oh, login!</td><td>Oh, password!</td></tr>";
$r = mysql_query("SELECT * FROM admins");
while ($row = mysql_fetch_assoc($r))
echo "<tr><td>{$row['login']}</td><td>{$row['password']}</td></tr>";
echo "</table>";
}
} else {
?>
<form>Oh, give me your password, Admin!<br/><br/><input type='text' name='password' /><input type='submit' value='»' /></form>
<?php
}
?>
<br/><br/><small>Oh, © 2010 vos!</small></center></body>
</html>
The only injection point was the first mysql_query(). Without the complication of MD5, the vulnerable line of code would have looked like this:
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The minimum depth for a 120-volt, 20-ampere, GFCI protected circuit to an outdoor receptacle run under a street is ______.
Select one:
a. 12 inches
b. 18 inches
c. 24 inches
d. 36 inches
Answer:
12 inches
Explanation:
NEC 300.5 Direct buried cable or conduit or other raceways shall meet the following minimum cover requirements: NOTE: Residential branch circuits rated 20 amps or less at 120 volts or less and with GFCI protection at their source are allowed a minimum cover of 12 inches.
a low-pass filter has a cutoff frequency of 1.23 khz. determine the bandwidth of the filter. 644 hz 2.46 khz 1.23 khz not enough information is given.
The range of frequencies that can pass through a low-pass filter is known as its bandwidth.
What is bandwidth ?The range of frequencies that can pass through a low-pass filter is known as its bandwidth. The cutoff frequency and the kind of filter play a role in determining this range.The cutoff frequency for a low-pass filter is the frequency at which the filter starts to weaken the signal.The distance between the cutoff frequency and the lowest frequency that is permitted to pass is hence the filter's bandwidth. Since the cutoff frequency in this situation is 1.23 kHz, the filter's bandwidth would be the distance between that frequency and the lowest frequency that can pass.However, it is impossible to calculate the filter's bandwidth because the lowest frequency is not specified.To learn more about bandwidth refer to:
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current attempt in progress a cylindrical radiation shield is placed around a hot cylinder in cold surroundings as shown below. the statement that is correct about the heat rate from the cylinder to the surroundings is: if the shield is a blackbody, then the heat rate is the same regardless of the shield diameter. if the shield is a blackbody, then the heat rate is the same as if there were no shield. if the emissivity of the inside of the shield is increased, then the heat rate will increase. etextbook and media save for laterattempts: 0 of 2 usedsubmit answer
High reflectivity and low emissivity should be characteristics of the radiator shields. The best material for radiation protection is lead metal.
The interaction of particles with matter through collisions and atom capture can be characterized as radiation shielding. In steel, a neutron with an energy of 1 Mev travels 4 cm on average between two impacts. Elements with a high atomic number and high density, like lead, provide the strongest protection against ionizing radiation, such as gamma rays. Very energetic beta particles can enter the body through the skin and travel up to half an inch. With less than an inch of material, such as plastic, they can be protected. The outer layer of clothing can function as an effective shield in the event of beta particles with lesser energy.
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Which of the following systems for events are substantially reduce the smoke intrusion into egress stairways, so occupants can use the stairs to exit the building?
The system to substantially reduce the smoke intrusion into egress stairways is stairway pressurization.
What is stairway pressurization?Stairway pressurization is a system to make mechanical ventilation design in order to establish air pressure between adjoining areas usually for escape route and burning room.
Stairway pressurization will use the different air pressure to ensure the one side of wall has positive air pressure and the other one has negative air pressure. Installed fans that will suck air into the stairwell is necessary in stairwell pressurization system.
With the different of air pressure, the smoke will exhausted into the other area than stairway, usually the rooftop. So, occupants can use stairs to exit.
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