I need help pleaseeeee!!!

The Internet was developed by Bob Kahn and Vint Cerf in the 1970s. They began the design of what we today know as the 'internet. '

Beginning in 1977, PCs were connected to one another to form Local Area Networks (LAN) using Ethernet networking technology. To connect all the LANs, the Internet, originally known as APRANET, was developed in 1969. In 1993, the World Wide Web (WWW), an easily accessible version of the Internet, gained widespread recognition and use. People began shopping online after brick-and-mortar stores like Best Buy and online retailers (online since 1995) emerged. Early in the new millennium, websites known as Web 2.0 emerged where users could add content to websites. Smart phones and cell phones began to be developed for commercial use in the 1970s, followed by smartphones. In 2007, the iPhone launched. The first smartphone powered by the Android operating system.

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What do you know about Internet describe the history and development of Internet?

Relational Algebra expressions are used to evaluate queries in relational databases. The expressions provide the foundation for all SQL-based systems and work on sets of data rather than individual records. Given below are the solutions to the given queries:

To answer your questions using relational algebra, here are the queries:

Query to get the ID of all students:

π(ID)(Students)

Query to get the ID of all students from Comp. Sci:

π(ID)(σ(Department = "Comp. Sci")(Students))

Query to get the ID of all students from Comp. Sci or Physics:

π(ID)(σ(Department = "Comp. Sci" ∨ Department = "Physics")(Students))

Query to get the ID of all students from Comp. Sci or Physics and name the result attribute StudentID:

ρ(StudentID/ID)(π(ID)(σ(Department = "Comp. Sci" ∨ Department = "Physics")(Students)))

Query to get the ID of all students and instructors:

π(ID)(Students) ⨝ π(ID)(Instructors)

Note: The queries assume that the "Students" and "Instructors" relations have attributes named "ID" and "Department" for students, and "ID" for instructors. Adjust the attribute names accordingly if they are different in your schema.

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Typically a personal computer uses a(n) internal disk to store the operating system and software applications.

This is known to be a kind of  tape, disk, optical that tends to drive or that is seen inside the case of any given desktop or laptop computer.

Note that An internal drive is one that gets its power from the central  power supply and the other types of storage devices are:

Therefore, Typically a personal computer uses a(n) internal disk to store the operating system and software applications.

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Agile Development Methodology: Agile development is a iterative and incremental approach to software development that emphasizes flexibility and collaboration between the development team and stakeholders. Agile methodologies prioritize customer satisfaction, working software, and continuous improvement. An example of software that might be developed using agile methodology is a mobile application, where requirements and priorities can change frequently and the development team needs to adapt and deliver new features quickly. Agile methodologies are well suited for projects that have rapidly changing requirements or are highly dependent on external factors.

DevOps Deployment Methodology: DevOps is a set of practices that combines software development and IT operations to improve the speed, quality and reliability of software deployments. DevOps focuses on automation, continuous integration and continuous deployment. An example of software that might be developed using DevOps methodology is an e-commerce platform, where it's important to have a reliable, fast, and secure deployment process, and that is also easily scalable.

Waterfall Development Methodology: The Waterfall methodology is a linear sequential approach to software development where progress is seen as flowing steadily downwards through the phases of requirements gathering, design, implementation, testing and maintenance. An example of software that might be developed using Waterfall methodology is a large enterprise software system that has well-defined requirements and a long development timeline. This methodology is well suited for projects where requirements are well understood and unlikely to change, and the development process can be divided into distinct phases.

Rapid Application Development (RAD): Rapid Application Development (RAD) is a methodology that emphasizes rapid prototyping and rapid delivery of working software. RAD methodologies prioritize rapid iteration and delivery of working software. An example of software that might be developed using RAD methodology is a startup's MVP (Minimum Viable Product), where the goal is to quickly develop a basic version of the product to test with customers and gather feedback. This methodology is well suited for projects where time-to-market is a critical factor and requirements are not fully understood.

Each methodology has its own advantages and disadvantages, and choosing the right methodology depends on the nature of the project, the goals of the development team, and the available resources.

Therefore, Agile methodologies, for example, prioritize flexibility and continuous improvement, while Waterfall methodologies prioritize predictability and a linear development process. DevOps methodologies prioritize automation, speed, and reliability while RAD methodologies prioritize rapid delivery and customer feedback.

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Some people believe that there is a spiritual connection between science and technology. They believe that science is a way of understanding the natural world, and that technology is a way of using that knowledge to improve the human condition. Others believe that science and technology are two separate disciplines, and that there is no spiritual connection between them.

What is technology?
Technology is the use of knowledge in a specific, repeatable manner to achieve useful aims. The outcome of such an effort may also be referred to as technology. Technology is widely used in daily life, as well as in the fields of science, industry, communication, and transportation. Society has changed as a result of numerous technological advances. The earliest known technology is indeed the stone tool, which was employed in the prehistoric past. This was followed by the use of fire, which helped fuel the Ice Age development of language and the expansion of the human brain. The Bronze Age wheel's development paved the way for longer journeys and the development of more sophisticated devices.

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Start by entering the initial investment on 1/1. Since you purchased 80% of the equity for $48,000, you need to calculate the initial investment amount. Multiply the purchase price by the percentage owned.

Enter the initial investment in the Equity Investment column for 1/1.Calculate the equity income using the equity method. The equity income is the investor's share of the invest's net income. If the invest has net income of $X, and you own 80% of the equity, your equity income would calculate the equity income using the equity method.calculate the equity income using the equity method.explanation helps you understand how to fill out the Excel sheet using the Equity Method.

calculate the equity income using the equity method. The equity income is the investor's share of the invest net income. If the invest has net income of $X, and you own 80% of the equity, your equity income would be Equity income = Net income x Ownership percentage for example, if the invest net income is $10,000:Equity income = $10,000 x 0.8 = $8,000 Enter the equity income in the Equity Income column for the corresponding date. remember to format the cells appropriately and use formulas to ensure accurate calculations.

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The non-comparative sorting algorithm that is unstable is 'pigeonhole sort.'Pigeonhole sort is a sorting algorithm that is non-comparative and linear.

Its worst-case and average-case performance are both O(n+Range) in the case of an integer sort, where 'Range' is the largest difference between any two elements in the list. The algorithm is simple to implement and is best suited for integer sorting in the linear time complexity range.Pigeonhole sort, also known as a bin sort or a counting sort, is a type of sorting algorithm.

The algorithm is simple and is often used for sorting small data sets. It's a non-comparative sorting algorithm, which means it doesn't rely on the comparison operation to compare objects.The pigeonhole sort algorithm divides the input array into pigeonholes. It is based on the fact that if n items are put into m containers, where m < n, at least one container must contain more than one item.

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Group of answer choices.

A. Rachel should look up how many bits are used to store integers and floating point numbers in the programming language she is using.

B. Rachel should reset her machine to store data using hexadecimal values instead of binary.

C. Rachel should run a program to ensure that she has enough memory on her machine to write the program itself.

D. Rachel does not have to worry about the size of the numbers

Answer:

A. Rachel should look up how many bits are used to store integers and floating point numbers in the programming language she is using.

Explanation:

In Computer programming, a bit is a short word for the term binary digit and is primarily the basic (smallest) unit measurement of data or information.

A bit is a logical state which represents a single binary value of either one (1) or zero (0). This ultimately implies that, a single bit in computer science represents a boolean value of;

1. True or ON, which is equal to one (1).

2. False or OFF, which is equal to zero (0).

Additionally, a binary numbering represents all numeric values that are to be written in sequences of ones (1s) and zeroes (0s). Therefore, a binary number refers to any numerical value (number) that is expressed in base-2 numerical system; 0s and 1s.

Also, the total numbers which can be represented with an 8 bit binary (base-2) system is 256.

For all computations that would involve the use of very large numbers, it's important to look up how many bits are used to store integers and floating point numbers.

In this context, Rachel should ensure that she check how many bits the chosen high-level programming language uses to store integers and floating point numbers before writing her codes.

Answer:

Proprietary License gives you full ownership and trademark/patent opportunites. Open source allows for code donation and a community based development for your app. Generally speaking, if your a private entity creating an app for a client, you'll need the Proprietary Licence, which will allow you to sell the codebase to your client.

If your creating an app for your company as itself, you go either way, sell the license in licensing agreements, or have your companies community contribute and better your app from the inside.

Its entirely based on the agreements you set for the app.

The implementation of the reverseletters function in Python is as follows:

def reverseletters(input_phrase):

   if len(input_phrase) <= 2:

       return input_phrase

   return input_phrase[0] + input_phrase[-2:0:-1] + input_phrase[-1]

input_phrase = "hello world"

output_phrase = reverseletters(input_phrase)

print(output_phrase)  

Explanation:

This function first checks if the length of the input phrase is less than or equal to 2, in which case the phrase is returned unchanged. Otherwise, it returns the first letter of the input phrase (input_phrase[0]) followed by the reversed sequence of letters between the last letter and the second letter (input_phrase[-2:0:-1]) and finally followed by the last letter of the input phrase (input_phrase[-1]). This implementation assumes that the input phrase consists of a single word with no spaces in the middle. If the input phrase contains spaces or punctuation, the function will not behave correctly.

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Answer:

In sequential programming, commands run in the order they are written. In event-driven programming, some commands run in response to user interactions or other events.

Explanation:

Event-driven program : A program designed to run blocks of code or functions in response to specified events.

Sequential programming: The order that commands are executed by a computer, allows us to carry out tasks that have multiple steps. In programming, sequence is a basic algorithm: A set of logical steps carried out in order.

The missing options are;

A) In sequential programming commands run one at a time. In event-driven programming all commands run at the same time.

B) In sequential programming commands run faster than in event-driven programming.

C) In sequential programming each command is run many times in sequence. In event-driven programming all commands are run a single time as an event.

D) In sequential programming commands run in the order they are written. In event-driven programming some commands run in response to user interactions or other events.

Option D is correct.

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"Web 2.0" refers to a new way to use the World Wide Web, whereby any user can create and share content, as well as provide opinions on existing content.

Web 2.0 is a term used to describe the shift in the use of the internet and the World Wide Web from static websites to dynamic platforms that enable user-generated content and interactivity. With Web 2.0, users are not just passive consumers of information but active participants who can contribute their own content, such as blog posts, videos, and social media updates.

Additionally, they can engage with existing content through comments, ratings, and sharing. Web 2.0 platforms empower individuals to be creators and contributors, fostering a more collaborative and interactive online environment.

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Answer:

Explanation:

What ever the number is inches is divide it by pixels

A process focused on the identification and location of potential evidence related to a specific legal action after it was collected through digital forensics is known as electronic discovery (eDiscovery).

This process includes the identification, preservation, collection, processing, review, and production of electronic data that is used as evidence in a legal case.eDiscovery has become increasingly important in recent years as the amount of electronically stored information (ESI) has grown exponentially. With the rise of social media, cloud computing, and the internet of things (IoT), the volume of digital data being created and stored has exploded, and this trend is expected to continue.eDiscovery is used in a wide range of legal cases, including civil litigation, criminal investigations, and regulatory compliance.

The process involves the use of specialized software tools to identify and collect relevant data from a wide range of sources, including email archives, social media posts, text messages, and cloud-based storage systems. Once the data has been collected, it is reviewed by legal professionals and analyzed for relevance, admissibility, and potential value as evidence in a legal case.Overall, eDiscovery is a complex and highly technical process that requires a deep understanding of both legal and technological issues. It is an essential tool for modern legal practice and plays a critical role in ensuring that justice is served.

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Hope it helps you

pls mark my answer as brainliest

Answer:

1 and 2: Charles Babbage invented the computer (he was an English mechanical engineer and polymath) Charles Babbage was deemed the "father of the computer", he thought up and created the very first mechanical computer at the beginning of the 19th century.

3: the first computer was named the ubiquitous x86-powered workhorse of desktop and portable computing. All latest PCs are descendants of the earliest from IBM, the original model 5150 which made its first appearence in August 1981.

4: The first laptop computer available to the public was the Osborne. the Osborne Computer Corporation issued this exact model to the public in the year 1981. It ran at a large price of $1795. At the time of discharge, the screen was about five inches long and the keyboard was on the cover of the computer.

i did a lot of research for this, lol. hope it helps.

(i promise i did not plagerise)

Answer:

Leave 1 inch margins on each side.

La palanca es una herramienta simple que se utiliza para aplicar una fuerza a un objeto, con el objetivo de moverlo o levantarlo. Está compuesta por tres elementos principales: el punto de apoyo (fulcro), la fuerza aplicada (fuerza motriz) y la carga (resistencia).

Para dibujar una palanca, dibuja una línea recta y horizontal para representar la barra de la palanca. Luego, dibuja un punto para representar el fulcro. La distancia entre el fulcro y la fuerza motriz (el punto donde se aplica la fuerza) se llama el brazo de la fuerza motriz. La distancia entre el fulcro y la carga se llama el brazo de la resistencia.La fórmula que se utiliza para calcular la relación entre la fuerza aplicada y la resistencia es: Fuerza motriz x brazo de la fuerza motriz = Resistencia x brazo de la resistencia.Por ejemplo, si la fuerza motriz es de 10 N y el brazo de la fuerza motriz es de 2 m, y la resistencia es de 20 N y el brazo de la resistencia es de 1 m, entonces la relación sería 10 N x 2 m = 20 N x 1 m.

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The variable x is at first set to 0. The whereas circle runs as long as x is less than 4.  The output of the code is  option  E. x is 4

In each emphasis of the circle, x is augmented by 1 and the current esteem of x is printed utilizing the print() explanation. So, the primary time through the circle, x is augmented to 1 and the message "x is 1" is printed.

Therefore, This prepare proceeds until x comes to 4, at which point the circle stops and the program exits. Hence, the ultimate value of x is 4 and it isn't printed since the circle has as of now ended.

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See full text below

What is the output of the following code?

x = 0

while x < 4:

x = x + 1

print("x is", x)

A. x is 0

B. x is 1

C. x is 2

D. x is 3

E. x is 4

x is 4

/force gpo is the correct command syntax to force gpo settings.

Only the updated policies are applied by GPupdate. You might, for instance, alter the policy that made the Windows lock screen available. Only the modified policy will be applied by this command. The command GPUpdate /force reapplies all policy settings.

A virtual group of policy settings is called a Group Policy Object (GPO). A GPO has a unique name, such as a GUID. A GPO contains Group Policy settings. The file system and Active Directory's policy settings can both be represented by a GPO. You can compel your company's group policies to be changed by using the command GPUpdate /force.

Group Policy changes don't take effect straight away; rather, they require 90 minutes to take effect (with a 30-minute lag to distribute the burden).

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Answer:

I am writing a Python program. Let me know if you want the program in some other programming language.

def toCamelCase(str):  

   string = str.replace("-", " ").replace("_", " ")  

   string = string.split()

   if len(str) == 0:

       return str

   return string[0] + ''.join(i.capitalize() for i in string[1:])

print(toCamelCase("the-stealth-warrior"))

Explanation:

I will explain the code line by line. First line is the definition of  toCamelCase() method with str as an argument. str is basically a string of characters that is to be converted to camel casing in this method.

string = str.replace("-", " ").replace("_", " ") . This statement means the underscore or dash in the entire are removed. After removing the dash and underscore in the string (str), the rest of the string is stored in string variable.  

Next the string = string.split()  uses split() method that splits or breaks the rest of the string in string variable to a list of all words in this variable.

if len(str) == 0 means if the length of the input string is 0 then return str as it is.

If the length of the str string is not 0 then return string[0] + ''.join(i.capitalize() for i in string[1:])  will execute. Lets take an example of a str to show the working of this statement.

Lets say we have str = "the-stealth-warrior". Now after removal of dash in by replace() method the value stored in string variable becomes the stealth warrior. Now the split() method splits this string into list of three words the, stealth, warrior.

Next return string[0] + ''.join(i.capitalize() for i in string[1:])  has string[0] which is the word. Here join() method is used to join all the items or words in the string together.

Now i variable moves through the string from index 1 and onward and keeps capitalizing the first character of the list of every word present in string variable from that index position to the end.  capitalize() method is used for this purpose.

So this means first each first character of each word in the string starting from index position 1 to the end of the string is capitalized and then all the items/words in string are joined by join() method. This means the S of stealth and W of warrior are capitalized and joined as StealthWarrior and added to string[0] = the which returns theStealthWarrior in the output.

Answer:

Mario

Explanation:

The thing that may be done to speed the recovery process and ensure that all cfc, hcfc, or hfc refrigerant has been removed from a frost-free refrigerator is that  the person need to Turn on the defrost heater to bring up the refrigerant's temperature and then it can be able to vaporize any liquid.

Temperature is known to be a form of measure that is often used to know the hotness or coldness of a thing or person and it is said to be usually in terms of any of a lot of scales, such as Fahrenheit and Celsius.

Note that Temperature tells the direction of heat energy that will spontaneously flow and as such, The thing that may be done to speed the recovery process and ensure that all cfc, hcfc, or hfc refrigerant has been removed from a frost-free refrigerator is that  the person need to Turn on the defrost heater to bring up the refrigerant's temperature and then it can be able to vaporize any liquid.

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To make mashed potatoes in the shortest time, the tasks can be divided among multiple people. Here is one possible distribution of tasks:

Person 1: Peel and chop potatoes, Boil water, Drain potatoes, Mash potatoesPerson 2: Set the table, Prepare butter and milk, Season mashed potatoe Person 3: Make gravy, Serve mashed potatoes and gravyThe sequence of tasks for each person can be represented as follows:Person 1: Peel and chop potatoes, Boil water, Drain potatoes, Mash potatoesPerson 2: Set the table, Prepare butter and milk, Season mashed potatoesPerson 3: Make gravy, Serve mashed potatoes and gravyNote: The order of the task lists can be rearranged, and spaces can be added for clarity. The autograder will consider answers with equivalent task sequences as correct.

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Answer:

Stop motion is an animated filmmaking technique in which objects are physically manipulated in small increments between individually photographed frames so that they will appear to exhibit independent motion or change when the series of frames is played back.

Architectural and engineering drawings are typically printed on a plotter.

Plotters are large-format printers specifically designed for printing technical drawings, blueprints, and other large-scale graphical documents. They are commonly used in industries such as architecture, engineering, and construction where precise and detailed drawings are required.

Architectural drawings, such as floor plans, elevations, and site plans, often contain intricate details and precise measurements. These drawings are typically created using Computer-Aided Design (CAD) software and are best suited for printing on plotters due to their large size and the need for accurate scaling.

Engineering drawings, including mechanical, electrical, and structural designs, also require the use of plotters. These drawings often involve complex diagrams, schematics, and technical specifications that need to be printed on larger paper sizes. Plotters can reproduce these detailed drawings with high precision and clarity, ensuring that every element is accurately represented.

Moreover, plotters are capable of printing on various media types, including different types of paper, vellum, and even glossy materials. This versatility allows for printing on specialized media required for specific applications.

In summary, architectural and engineering drawings are the types of documents that are typically printed on plotters. Plotters excel at reproducing large-scale technical drawings accurately, making them an essential tool for professionals in the architecture, engineering, and construction fields.

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Answer:

The answer is below

Explanation:

The possible risks and problems that should be addressed during the implementation of the information system process are:

1. power loss or data corruption

2. System design faults

3. Cultural barriers

4. Integration of Software Development device

5. Using the same processes in the company

6. Security breaches

7. Hardware and Software failure

8. Work environment

Here's an example of a do-while loop in Java that displays the squared value of a number from 2 to 4.

public class SquareValues {

   public static void main(String[] args) {

       int number = 2; // Starting number

       do {

           int squaredValue = number * number;

           System.out.println("The squared value of " + number + " is " + squaredValue);

           number++;

       } while (number <= 4);

   }

}

Output:

The squared value of 2 is 4

The squared value of 3 is 9

The squared value of 4 is 16

In this example, the loop starts with number initialized to 2. It calculates the squared value of the current number, prints it using System.out.println(), and then increments the number by 1. The loop continues until the number reaches 4.

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The task is to analyze stock prices over a period of n months and find the most profitable month for each month based on specific conditions, such as comparing stock prices and minimum values.

The given problem involves analyzing stock prices over a period of n months to determine the most profitable month for each month.

The most profitable month is defined as the earliest month after the current month where all subsequent months have stock prices higher than the minimum stock price in the first m months.

The task is to find the most profitable month for each month and return -1 if such a month does not exist.

The example provided demonstrates the calculation of the most profitable months for the given stock prices.

By iterating through each month and comparing the stock prices, the most profitable month can be identified based on the defined conditions.

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The invalid C++ identifier is "A_+_B".

Long answer: In C++, identifiers are used to name variables, functions, and other user-defined items. An identifier can only consist of letters (both uppercase and lowercase), digits, and underscores (_), and it cannot begin with a digit.
The first option, "TwoForOne", is a valid identifier as it consists of letters only and follows the naming convention of camel case.

The third option, "two_for_one", is also a valid identifier as it consists of letters and underscores, and follows the naming convention of snake case.
The fourth option, "A_plus_B", is also a valid identifier as it consists of letters and underscores.
However, the second option, "A_+_B", is an invalid identifier as it contains a plus (+) symbol which is not allowed in identifiers.

Therefore, the invalid C++ identifier is "A_+_B".

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