Bringing the NFC reader in very close proximity to the NFC tag creates an electromagnetic field in the NFC tag, enabling the two devices to communicate using only power from the reader.
What is NFC?NFC (Near Field Communication) is a wireless communication technology that allows for the exchange of data between two NFC-enabled devices. It functions by bringing the devices together in very close proximity to one another, with one device, known as the initiator or active device, initiating the data transfer and the other device, known as the target or passive device, receiving the data.
NFC communication can be utilized in a variety of applications, including mobile payments, ticketing, access control, and data exchange. The technology is supported by a wide range of smartphones, tablets, and other devices and has become increasingly popular in recent years.
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the volume of two similar solids are 1080cm and 1715cm .if the curved surface area of the smaller cone is 840cm .fond the curved surface area of the larger cone
Answer:
\(A_{big} = 1143.33cm^2\)
Explanation:
The given parameters are:
\(V_{small} = 1080\)
\(V_{big} = 1715\)
\(C_{small} = 840\)
Required
Determine the curved surface area of the big cone
The volume of a cone is:
\(V = \frac{1}{3}\pi r^2h\)
For the big cone:
\(V_{big} = \frac{1}{3}\pi R^2H\)
Where
R = radius of the big cone and H = height of the big cone
For the small cone:
\(V_{small} = \frac{1}{3}\pi r^2h\)
Where
r = radius of the small cone and H = height of the small cone
Because both cones are similar, then:
\(\frac{H}{h} = \frac{R}{r}\)
and
\(\frac{V_{big}}{V_{small}} = \frac{\frac{1}{3}\pi R^2H}{\frac{1}{3}\pi r^2h}\)
\(\frac{V_{big}}{V_{small}} = \frac{R^2H}{r^2h}\)
Substitute values for Vbig and Vsmall
\(\frac{1715}{1080} = \frac{R^2H}{r^2h}\)
Recall that:\(\frac{H}{h} = \frac{R}{r}\)
So, we have:
\(\frac{1715}{1080} = \frac{R^2*R}{r^2*r}\)
\(\frac{1715}{1080} = \frac{R^3}{r^3}\)
Take cube roots of both sides
\(\sqrt[3]{\frac{1715}{1080}} = \frac{R}{r}\)
Factorize
\(\sqrt[3]{\frac{343*5}{216*5}} = \frac{R}{r}\)
\(\sqrt[3]{\frac{343}{216}} = \frac{R}{r}\)
\(\frac{7}{6} = \frac{R}{r}\)
The curved surface area is calculated as:
\(Area = \pi rl\)
Where
\(l = slant\ height\)
For the big cone:
\(A_{big} = \pi RL\)
For the small cone
\(A_{small} = \pi rl\)
Because both cones are similar, then:
\(\frac{L}{l} = \frac{R}{r}\)
and
\(\frac{A_{big}}{A_{small}} = \frac{\pi RL}{\pi rl}\)
\(\frac{A_{big}}{A_{small}} = \frac{RL}{rl}\)
This gives:
\(\frac{A_{big}}{A_{small}} = \frac{R}{r} * \frac{L}{l}\)
Recall that:
\(\frac{L}{l} = \frac{R}{r}\)
So, we have:
\(\frac{A_{big}}{A_{small}} = \frac{R}{r} * \frac{R}{r}\)
\(\frac{A_{big}}{A_{small}} = (\frac{R}{r})^2\)
Make \(A_{big}\) the subject
\(A_{big} = (\frac{R}{r})^2 * A_{small}\)
Substitute values for \(\frac{R}{r}\) and \(A_{small}\)
\(A_{big} = (\frac{7}{6})^2 * 840\)
\(A_{big} = \frac{49}{36} * 840\)
\(A_{big} = \frac{49* 840}{36}\)
\(A_{big} = 1143.33cm^2\)
Hence, the curved surface area of the big cone is 1143.33cm^2
What is presentation software?
Explain power point
What is eye strain?
What is tiles in computing?
Explain the term RSI
What is technology in computing?
What is spread sheet?
Presentation software, like Microsoft PowerPoint, provides users with the capacity to craft and display multimedia presentations which typically incorporate slides with text, images, videos, and other forms of media.
What is Eye Strain?Eye strain is an ailment resulting from prolonged periods of reading, computer use, or activities necessitating intense focus. Complications include headaches, blurred vision, dry eyes, and discomfort in the shoulders and neck.
A tile, in computing, refers to a small, block-like graphical component utilized on a computer screen for representing different types of information or applications. Such elements are commonly featured inside of operating systems as well as app user interfaces to give visual representation of various programs and functions.
RSI (Repetitive Strain Injury) is an affliction affecting individuals participating in repeated physical activities over extended durations. Typically, this impacts office personnel or computer users who spend ample time typing on a keyboard or manipulating a mouse. Signs include ache, numbness, and weakness in the afflicted area.
Technology in computing points to the application of electronic devices and computer systems towards automating and augmenting numerous components of life and occupation. It encompasses hardware, software, and communication technologies that provide people with the capability to collaborate excellently, connect intelligently, and share information expediently.
Spreadsheets are computer applications meant for organizing and turning data into tabular notation. Sections of rows and columns contain values or formulas with each cell, individually. These are often employed in financial management, accounting, business, and fiscal analysis to track spending, manage budgets, and assess data. Microsoft Excel is one of the more renowned spreadsheet oriented programs around.
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Write a code in python that guesses a hardcoded answer and keeps on asking the user until the user gets the answer correct. The cmputer should be telling the user if the number they are guessing is too low or too high.
import random
#You can change the range.
answer = random.randint(1,1000)
counter = 0
while(True):
guess = int(input("Make a guess: "))
message = "Too high!" if guess>answer else "Too low!" if guess<answer else "You won!"
print(message)
if(message=="You won!"):
print("It took",counter,"times.")
break
else:
counter+=1
if compilation of a computer program produces error messages, then the program is not correct. the program is not correct. compilation of the computer program produces error messages. which one of the following statements is true for this argument?
The compilation of a computer program produces error messages, then the program is still correct.
A software bug is a mistake, flaw, or fault in the conception, creation, or use of computer software that results in inaccurate or unexpected outcomes or leads it to act in ways that weren't intended. Runtime errors, logic mistakes, and syntax errors are the three sorts of problems that might arise when writing programs. Computer programs may contain a variety of flaws, or bugs, which might prevent them from operating as intended. Runtime, syntactic, and semantic errors are three of the main error categories. In general, a bug is an unforeseen flaw or imperfection that may be permanent, whereas an error typically happens when there is an incorrect input and is transient in nature.
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Write a program that asks the user to enter the name of an input file. If the file does not exist, the program should prompt the user to enter the file name again. If the user types QUIT in any uppercase/lowercase combinations, then the program should exit without any further output.
Answer:
I can help you with that inbox me
As part of their extensive kitchen remodel, the Lees told their electrical contractors that they would need plenty of outlets for their many appliances. The contractors
knew that they would need to install small-appliance branch circuits using what kind of wire and circuit breaker?
The kind of wire and circuit breaker are: grounding wire such as fairly large bare copper wire.
What is the best wire for the above?A 20A, 120V small-appliance branch circuit is known to be used in the case above.
Note that Electric range circuits needs about 50-amp, 240-volt made for circuit that is said to supplies the power to the range or oven via a 6-3 electrical wire.
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a search engine is aprogram to search......
What kind of digital that refers to the ability to engage positively critically and competently in the digital environment?
The term "digital citizenship" describes the capacity to interact constructively, critically, and competently in the digital environment, relying on the abilities of effective communication and creation, to engage in social behaviors that respect human rights and dignity through responsible use of technology.
What is digital citizenship?
Any person who utilizes computers, the internet , or other digital devices to interact with society on any level is practicing digital citizenship, which is the term used to describe their responsible use of technology.
In my book, Digital Citizenship in Schools, I outline a framework for teachers of all subject areas and grade levels to use in order to introduce the fundamentals of digital citizenship.
I explain the three categories of digital citizenship—respect, educate, and protect—as well as the three pillars of each. simply, politely, and empathetically communicates. builds habits for lifelong learning and actively pursues education. prudence in their use of and handling of money. respects fundamental human rights including freedom of speech and privacy. Being a good digital citizen means being able to use our digital spaces responsibly and safely, as well as to interact with others there in an active and courteous manner.
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You want to make sure that all users have passwords over eight characters in length and that passwords must be changed every 30 days. What should you do
Answer:
Configure account policies in Group policy.
Explanation:
The development of computer languages is classified into two categories .
true or false
Answer:
False
Explanation:
Mark me as a brainliest
can someone give me an window blur code in javascript like i mean full coding
Answer:
uh wha- what?!?!
Explanation:
no
find it urself
:P
jekqfjewil bored anyways
PLS HELP ;CC
The "Rule of Thirds" is compositional technique that was incorporated into photography from __________ .
a
early photographers who were first painters
b
early camera makers who found it was easy to explain to amateur photographers
c
early photo printers who used it and later it became a common rule
d
early SMPTE standards
Answer:
a
early photographers who were first painters
Explanation:
The Rule of Thirds is a compositional technique which states that image painting, photograph, graphic design should be divided into nine equally proportioned boxes by creating a grid with two vertical and two horizontal lines. The rule of third helps in making the picture more attractive and balanced
The rule of thirds was first used in landscape paintings by painters as early as 1797.
Miguel has a problem with the output on his laptop. Which of the following could be the source of the problem?
O the memory chip
O the speaker
O the microphone
O the keyboard
Answer:
the speaker
Explanation:
all if the rest are input devices so it must be the speaker I guess
This function checks if a character is a vowel. If it is, it returns true. Otherwise, it returns false. Where should return false; be written in the code? function checkVowel(character){ var vowels = ["a", "e", "i", "o", "u"]; for(var i=0; i
Answer:
at the end, i.e., after the for loop.
Explanation:
see code.
I also added a cooler alternative implementation.
The main function's return of 0 indicates a successful program execution. Return 1 in the main function denotes an error and indicates that the program did not run correctly. Returning zero indicates that a user-defined function has returned false. Returning 1 indicates that a user-defined function has returned true.
What return false be written in the code?One of the two values is what t may return. If the parameter or value supplied is True, it returns True. If the supplied parameter or value is False, it returns False.
Because it is a string, “0” is equivalent to false in JavaScript. However, when it is tested for equality, JavaScript's automatic type conversion changes “0” to its numeric value, which is 0; as we know, 0 denotes a false value. As a result, “0” is false.
Therefore, at the end, i.e., after the for loop. I also included a more attractive alternate implementation.
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Write a program that creates a two-dimensional list named lengths and stores the following data:
20 15 16
15 16 15
16 15 16
The program should also print the list.
Answer:
Explanation:
Following is the python code of your question:
lengths = [
[20, 15, 16],
[15, 16, 15],
[16, 15, 16]
]
print(lengths)
Following is the C code of your question:
#include <stdio.h>
int main() {
int lengths[3][3] = {
{20, 15, 16},
{15, 16, 15},
{16, 15, 16}
};
// Printing the array of named lengths
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
printf("%d ", lengths[i][j]);
}
printf("\n");
}
return 0;
}
write a program that simulates a magic 8 ball, which is a fortune-telling toy that displays a random response to a yes or no question.
Here's an example program in Python that simulates a Magic 8 Ball:
pythonimport random
def magic₈ball():
responses = [ "It is certain.",
"It is decidedly so.", "Without a doubt.",
"Yes - definitely.", "You may rely on it.",
"As I see it, yes.", "Most likely.",
"Outlook good.", "Yes.",
"Signs point to yes.", "Reply hazy, try again.",
"Ask again later.", "Better not tell you now.",
"Cannot predict now.", "Concentrate and ask again.",
"Don't count on it.", "My reply is no.",
"My sources say no.", "Outlook not so good.",
"Very doubtful." ]
question = input("Ask a yes or no question: ")
response = random.choice(responses) print("Magic 8 Ball says:", response)
magic₈ball()
In this program, we define a list responses that contains various possible responses from the Magic 8 Ball.
"Reply hazy, try again.",
"Ask again later.", "Better not tell you now.",
"Cannot predict now.", "Concentrate and ask again.",
"Don't count on it.", "My reply is no.",
"My sources say no.", "Outlook not so good.",
"Very doubtful." ]
question = input("Ask a yes or no question: ")
response = random.choice(responses) print("Magic 8 Ball says:", response)
magic₈ball()
In this program, we define a list responses that contains various possible responses from the Magic 8 Ball. The magic₈ball function prompts the user to ask a yes or no question, selects a random response from the list, and then prints the response. The program runs by calling the magic₈ball function. Each time you run the program, you will get a different random response from the Magic 8 Ball.
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The program gets an input value into variable numBaths. Write code that outputs the value of variable numbaths. End with a newline.
The code that that outputs the value of variable numbaths when the program gets an input value into variable numBaths. will be;
#include <iostream>
int main() {
int numBaths;
std::cin >> numBaths;
std::cout << numBaths << std::endl;
return 0;
What is a program?A program is a predetermined set of sequential activities that a computer is programmed to carry out. The computer executes the program's one-at-a-time series of instructions. The application is often stored in a location that the computer can access.
A program, or software program, is a set of instructions that tells a computer's hardware how to carry out a task. In this case, the code is depicted above.
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which function would you use when saving a formatted document to make it easy to reuse for later reports
One can facilitate the reuse of a formatted document for future reports by utilizing the "Save As Template" or "Save as Template Document" feature, depending on the software or application being utilized.
How can this feature be used?With this feature, you can store the file as a template document and maintain the design, arrangement, and formats of the file, while eliminating any unique information.
Conveniently, you can save the document as a template, which grants you the ability to generate fresh reports utilizing the established template. This technique saves time and guarantees that formatting is consistent throughout numerous reports.
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JAVA ONLY
we suppose that we already have two classes Student and Teacher that have the same String birthday as attribut, you are to write a function which using two LinkedArray, one for Teacher and the other for student, returns a UNIQUE LinkedList with the teachers students that share the same birthday
The given problem statement describes a requirement for writing a function that returns a unique linked list of the teachers' students who share the same birthday. The input parameter for this function should include two linked arrays, one for the teachers and the other for the students. Both classes have the same string birthday as their attribute.
To solve this problem, we need to iterate through each element in both the arrays and compare the value of the birthday string for both Teacher and Student classes. If both the values match, then we need to add the corresponding student to the linked list of the teacher.
The implementation of the function is as follows:
public static Linked List matching
Birthday(Teacher[] teachers, Student[] students)
{LinkedList matchingStudents = new LinkedList();
for (Teacher teacher : teachers) {for (Student student : students) {if (teacher.getBirthday().
equals(student.getBirthday())) {matchingStudents.add(student);
}}}
return new LinkedList(new HashSet(matchingStudents));
}
This function uses a nested loop to traverse through each element of both the teachers and the students linked arrays. It then checks if the teacher's birthday matches with the student's birthday. If it matches, it adds the student to the linked list of the teacher. Lastly, the function returns the unique linked list of the teacher's students who share the same birthday by using the HashSet to eliminate duplicate elements.
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Which of these best describes the difference between ports and slots?
Answer:
hi
Explanation:
What sense?
you mean something like that?
ports are temporary stops for maritime transport, and slots are used for long-term living here.
hris has received an email that was entirely written using capitalization. He needs to paste this text into another document but also ensure that the capitalization is removed.
What should Chris do?
Choose the term that best matches each definition.
A
covers a small area like a home or building.
A
covers a large area like a city or country.
Answer:
Local Area Network ...LAN...
covers a small area like a home or building
Metropolitan Area Network ...MAN...
covers a area like city or county
Explanation:
Hope this will help
Answer:
A local area network covers a small area like a home or building.
A wide area network covers a large area like a city or country.
Explanation:
A local area network (LAN) is a network that covers a relatively small geographical area such as a home, office building, or school. Whereas a wide area network (WAN) is network that covers a large geographical area. The Internet is the world's largest WAN.
(Confirmed on EDGE)
I hope this helped!
Good luck <3
Amal wants to store a list of the average temperatures for the past month (for example 14.2, 14. 12.6). What data type can he use to store all these values?
A. Floating point number
B. Integer
C. Array
D. String
Answer: the correct answer is C
Explanation: array is 100% correct
I got the question right
Which symbols does excel use to indicate that a cell is not wide enough to display a formula or function result?
Excel uses the hash (#) symbol to indicate that a cell is not wide enough to display a formula or function result. When a formula or function result in Excel is too long to be displayed in a cell, the program will display a series of hash symbols in the cell instead. The number of hash symbols displayed depends on the length of the result and the width of the cell.
To resolve this issue, you can adjust the column width by double-clicking on the right border of the column header or dragging the right border to the desired width. Alternatively, you can use the Wrap Text feature to display the entire result in the cell by selecting the cell, clicking the Wrap Text button in the Home tab, and then adjusting the row height as needed.
It is important to note that the hash symbol does not indicate an error in the formula or function, but rather a display issue. If you want to view the full formula or function result, you can also use the formula bar at the top of the screen, which displays the complete formula or function result regardless of the width of the cell.
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Which option offers predesigned formatting and design elements to facilitate the process of creating a document?
A.
themes
B.
templates
C.
design
D.
layout
Answer:
The answer is B, templates
Explanation:
Answer:
B. templates
Explanation:
Create a C++ program to compute the average of three tests or quizzes and display the score and average on distinct lines, and do it using arithmetic operators.
#include <iostream>
#include <vector>
#include <numeric>
int main() {
std::vector<int> store(3);
for(int i=0;i<3;i++){
std::cout << i+1 << ". test result: ";
std::cin>>store[i];
}
for(int i=0;i<3;i++) {
std::cout << i+1 << ". test score: " << store[i] << std::endl;
}
std::cout << "Average: " << double(std::accumulate(store.begin(),store.end(),0.0)/store.size()) << std::endl;
return 0;
}
How do you add a new comment to a document?
A. Choose the References tab, then New Comment.
B. Choose the Layout tab, then Insert Comment.
C. Choose the File tab, then New Comment.
D. Choose the Review tab, then New Comment.
Answer:
D. Choose the Review tab, then New Comment
Explanation:
It's quite easy to add comments to word documents.
From the list of given options, only option D satisfy the given question.
To add comments to a text, you simply highlight the text
Go to the review tab then select new comment.
Once you follow these simple steps, a new comment will be created in your word document.
The correct answer is D. Choose the Review tab, then New Comment.
If you go to the review tab in Microsoft Word, the center there is a group labeled Comments. There's a large button on the left-hand side in that group labeled New Comment.
Hope this helps :)
You carried out a PERT analysis of a very large activity-event network using only slightly skewed or symmetric beta distribution models for the activity durations. Your analysis yields a mean duration of 56.2 time units for the critical path with a variance of 3.4. What is your best estimate of the probability of successful project completion in 57 time units or less? Provide your answer as a number between 0 and 1 with 3 decimals (3 digits after the decimal point, for example: 0.123).
PERT (Program Evaluation and Review Technique) is a network analysis technique commonly used in project management.
It is particularly useful when there is a high level of uncertainty surrounding the duration of individual project activities. PERT uses probabilistic time estimates, which are duration estimates based on using optimistic, most likely, and pessimistic estimates of activity durations, or a three-point estimate.
These estimates help to identify the likelihood of meeting project deadlines and can assist project managers in developing effective project schedules and resource allocation plans. Overall, PERT is an important tool for managing complex projects with uncertain activity durations.
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One of the disadvantages of cable technology is that: while it works well for television signals, it is ineffective for data transmissions required by the Internet. while it works well for television signals, it is ineffective for data transmissions required by the Internet. none of the available options are true. none of the available options are true. it is incompatible with most modern communication systems. it is incompatible with most modern communication systems. systems used by many providers require customers to share bandwidth with neighbors. systems used by many providers require customers to share bandwidth with neighbors.
Answer:
systems used by many providers require customers to share bandwidth with neighbors
Explanation:
One of the disadvantages of cable technology is that systems used by many providers require customers to share bandwidth with neighbors. This ultimately causes many problems since cables would need to be extended to reach every single user that will be sharing the bandwidth. This would mean cables all over the place. Also, it is very difficult to limit the bandwidth per person, meaning that if anyone is using up all of the bandwidth through the cable, the rest of the individuals connected would not have the bandwidth that they need or are paying for.
true/false. voip technology delivers voice information in digital form using packet switching.
True.
VoIP (Voice over Internet Protocol) technology converts voice information into digital packets that are transmitted over the internet
or a private network using packet switching. This digital format allows for the integration of voice, video, and data communication over a single network, resulting in cost savings and increased efficiency. Packet switching breaks up the voice signal into smaller packets that are transmitted over the network and then reassembled at the destination. This technology has revolutionized telecommunications, enabling businesses and individuals to make low-cost or even free calls across the globe. It also provides features such as call forwarding, call waiting, and caller ID that were not available on traditional phone systems.
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