Answer:
They share or broadcast information by making a letter or information in a papyrus material. in industrial age they use Telegraph or typewriter to communicate each other.
In electronic age, people use electronic medium for communication, like emails and messegers.
The compound known as butylated hydroxytoluene, abbreviated as BHT, contains carbon, hydrogen, and oxygen. A 1.501 g sample of BHT was combusted in an oxygen rich environment to produce 4.497 g of CO2(g) and 1.473 g of H2O(g). Insert subscripts below to appropriately display the empirical formula of BHT.
Answer:
C15H24O
Explanation:
n(C) = 4.497 g/44g/mol = 0.1022
Mass of C = 0.1022 × 12 = 1.226 g
n(H) = 1.473g/18 g/mol = 0.0823 ×2 moles = 0.165 moles
Mass of H = 0.0823 × 2 ×1 = 0.165g
Mass of O= 1.501 -(1.226 + 0.165)
Mass of O= 0.11 g
Number of moles of O = 0.11g/16g/mol = 0.0069 moles
Dividing through by the lowest ratio;
0.1022/0.0069, 0.165/0.0069, 0.0069/0.0069
15, 24, 1
Hence the formula is;
C15H24O
Answer
The formula is C1SH240
What are 6 Steps in opening the print dialogue box in PowerPoint presentation?
Answer:
Find the steps below.
Explanation:
The print dialogue box is the box that contains all the options to be selected before a hard copy of the power point presentation is obtained. The steps in opening it include;
1. Click on File to select the document to be printed
2. Click the Print icon
3. When the option Printer is displayed, choose the desired printer
4. Select Settings and choose the number of slides to print, the layout of the print-out, the color, and if the slides will be collated or not.
5. Select the number of copies to be printed
6. Click Print or Ok
what is a network computer that processes requests from a client server
Answer:
computer processing unit
computer processing unit is a network computer that processes requests from a client server.
What is a computer processing unit?The main element and "control center" of a computer is the Central Processing Unit (CPU). The CPU, sometimes known as the "central" or "main" processor, is a sophisticated collection of electronic circuitry that manages the device's software and operating system.
A central processing unit, sometimes known as a CPU, is a piece of electronic equipment that executes commands from software, enabling a computer or other device to carry out its functions.
Computers use a brain to process information, much like people do. The brain is the central processing unit for a computer (CPU). The CPU is the component that carries out all of the computer's instructions. It connects with all the other hardware parts of the computer while being on the motherboard.
Thus, computer processing unit.
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The following pseudocode describes how a widget company computes the price of an order from the total price and the number of the widgets that were ordered. Read the number of widgets. Multiple the number of widgets by the price per widget of 9.99. Compute the tax (5.5 percent of the total price). Compute the shipping charge (.40 per widget). The price of the order is the sum of the total widget price, the tax, and the shipping charge. Print the price of the order
Answer:
The program in Python is as follows:
widget = int(input("Widgets: "))
price = widget * 9.9
tax = price * 0.55
ship = price * 0.40
totalprice = price + tax + ship
print("Total Price: $",totalprice)
Explanation:
The question is incomplete, as what is required is not stated.
However, I will write convert the pseudocode to a programming language (in Python)
Get the number of widgets
widget = int(input("Widgets: "))
Calculate price
price = widget * 9.9
Calculate the tax
tax = price * 0.55
Calculate the shipping price
ship = price * 0.40
Calculate the total price
totalprice = price + tax + ship
Print the calculated total price
print("Total Price: $",totalprice)
Reverse Word Order: Write a program that reverses the order of the words in a given sentence. This program requires reversing the order of the words wherein the first and last words are swapped, followed by swapping the second word with the second to last word, followed by swapping the third word and the third to last words, and so on.
Answer:
function reverseArray(arr) {
if (arr.length > 1) {
arr = [arr[arr.length-1], ...reverseArray(arr.slice(1, -1)), arr[0]]
}
return arr;
}
function reverseSentence(sentence) {
let words = reverseArray( sentence.split(" ") );
return words.join(" ");
}
console.log( reverseSentence("The quick brown fox jumps over the lazy dog's back") );
console.log( reverseSentence("one two three") );
console.log( reverseSentence("one two") );
console.log( reverseSentence("Single") );
Explanation:
This is a solution in javascript leveraging several powerful constructs in that language, such as the spread operator.
what is the difference of expository and reflexive documentary
write a program to update the rate by increasing 20% from sequential data file "items.dat" that store item name.rate and quantity
Answer:
your answer is in the pic
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[tex](a + b) {2}[/tex]
Answer:
ab2
Explanation:
Which report views shows how the report will look in print and enable you to make modifications to the print settings?
Answer:
Print preview
Explanation:
In Microsoft access the report view that will show you an accurate picture of what your print out will look like before it is printed is : Print preview
Microsoft access is a relational database that allows the usage and storage of information in and organization
what is your biggest takeaway on that subject?
Hi. You have not informed the subject to which this question refers, which makes it impossible for your question to be answered. However, I will try to help you as best I can.
The only way to answer this question is to evaluate the media where the subject in question is being presented. Thus, you must understand this subject, whether reading a text about it or watching a video about it, the important thing is that you understand it and absorb all the teachings it is capable of transmitting.
In this case, you need to evaluate all these teachings which was the most important for you and which represented a very important lesson in your life. This lesson will be the biggest takeaway you've achieved with this subject.
difference between cyberbullying ,cyber wellness and cyber safety
In the U.S. fuel efficiency of cars is specified in miles per gallon (mpg). In Europe it is often expressed in liters per 100 km. Write a MATLAB user- defined function that converts fuel efficiency from mpg to liters per 100 km. For the function name and arguments, use Lkm-mpgToLpkm (mpg). The input argument mpg is the efficiency in mi/gl, and the output argument Lkm is the efficiency in liters per 100 km (rounded to the nearest hundredth). Use the function in the Command Window to:________.
(a) Determine the fuel eficiency in liters per 100 km of a car whose fuel effi- ciency is 21 mi/gal.
(b) Determine the fuel efficiency in liters per 100 km of a car whose fuel effi- ciency is 36 mi/gal.
Answer and Explanation:
Using MATLAB code:
Function Lkm = Lkm-mpgToLpkm (mpg)
Lkm= mpg*1.60934/3.78541;
Lkm= Lkm^(-1);
Lkm= Lkm*100;
%the code above defines a function Lkm and takes argument/input to its parameter mpg(miles per gallon) and then returns/output Lkm which is the litres per kilometers conversion from miles per gallon input.
end
To call the function written above with argument 30 mpg, we write:
Lkm= Lkm-mpgToLpkm (30)
What does Falstaff do to protect himself in battle?
Given the value x=false ,y=5 and z=1 what will be the value of F=(4%2)+2*Y +6/2 +(z&&x)?
F = 13
Explanation:Given:
x = false
y = 5
z = 1
F = (4%2)+2*Y +6/2 +(z&&x)
We solve this arithmetic using the order of precedence:
i. Solve the brackets first
=> (4 % 2)
This means 4 modulus 2. This is the result of the remainder when 4 is divided by 2. Since there is no remainder when 4 is divided by 2, then
4 % 2 = 0
=> (z && x)
This means (1 && false). This is the result of using the AND operator. Remember that && means AND operator. This will return false (or 0) if one or both operands are false. It will return true (or 1) if both operands are true.
In this case since the right operand is a false, the result will be 0. i.e
(z && x) = (1 && false) = 0
ii. Solve either the multiplication or division next whichever one comes first.
=> 2 * y
This means the product of 2 and y ( = 5). This will give;
2 * y = 2 * 5 = 10
=> 6 / 2
This means the quotient of 6 and 2. This will give;
6 / 2 = 3
iii. Now solve the addition by first substituting the values calculated earlier back into F.
F = (4%2)+2*Y +6/2 +(z&&x)
F = 0 + 10 + 3 + 0
F = 13
Therefore, the value of F is 13
Christina has been asked by the firewall administration group to identify secure network protocols that can be used to prevent network analyzers from being able to read data in flight. What are considered as secure network protocols?
Answer:
SSH, HTTPS and SMTP
Explanation:
Data theft can be defined as a cyber attack which typically involves an unauthorized access to a user's data with the sole intention to use for fraudulent purposes or illegal operations. There are several methods used by cyber criminals or hackers to obtain user data and these includes DDOS attack, SQL injection, man in the middle, phishing, etc.
Encryption is a form of cryptography and typically involves the process of converting or encoding informations in plaintext into a code, known as a ciphertext. Once, an information or data has been encrypted it can only be accessed and deciphered by an authorized user.
Some examples of encryption algorithms are 3DES, AES, RC4, RC5, and RSA.
Hence, SSH, HTTPS and SMTP are considered as secure network protocols.
HTTPS is acronym for Hypertext Transfer Protocol Secure while SSL is acronym for Secure Sockets Layer (SSL).
SMTP is an acronym for Simple Mail Transfer Protocol and it uses the standard port number of 25 to provide clients with requested services.
write the sql code to generate the total hours worked and the total charges made by all employees . the results are shown in fig.P7.8
Answer:
Select SUM(HOURS), SUM(CHARGES) from employees
Explanation:
The table structure is not given. So, I will assume that the table name is "employees", the columns to retrieve are "hours" and "charges"
Having said that, the function to retrieve the total of column is the sum() function.
So, the query is as follows:
Select ----> This means that the query is to retrieve from the table
SUM(HOURS), SUM(CHARGES) --- This represent the records to retrieve
from employees ---- This represents the table to retrieve from.
Write a Java program that creates a two-dimensional array of type integer of size x by y (x and y must be entered by the user). The program must fill the array with random numbers from 1 to 9. Then, the program must print the original array and the elements that are in even columns of the array.
Answer:
The java program is as follows:
import java.util.*;
public class Main{
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
Random r = new Random();
int x, y;
x = input.nextInt();
y = input.nextInt();
int[][] Array2D = new int[x][y];
for(int i = 0; i < x ; i++){
for(int j = 0; j < y; j++){ Array2D[i][j] = r.nextInt(9) + 1; }
}
for(int i = 0; i < x ; i++){
for(int j = 0; j < y; j++){ System.out.print(Array2D[i][j]+" "); }
System.out.println();
}
for(int i = 0; i < x ; i++){
for(int j = 1; j < y; j+=2){ System.out.print(Array2D[i][j]+" "); }
System.out.println();
}
}
}
Explanation:
This creates a random object
Random r = new Random();
This declares x and y as integers
int x, y;
This gets input for x
x = input.nextInt();
This gets input for y
y = input.nextInt();
This declares the 2D array
int[][] Array2D = new int[x][y];
The following iteration populates the array with integers 1 to 9
for(int i = 0; i < x ; i++){
for(int j = 0; j < y; j++){ Array2D[i][j] = r.nextInt(9) + 1; }
}
The following iteration prints all elements of the array
for(int i = 0; i < x ; i++){
for(int j = 0; j < y; j++){ System.out.print(Array2D[i][j]+" "); }
System.out.println();
}
The following iteration prints all elements on the even column
for(int i = 0; i < x ; i++){
for(int j = 1; j < y; j+=2){ System.out.print(Array2D[i][j]+" "); }
System.out.println();
}
What are the consequences of writing selection structures to include an unnecessary nested selection structure ?
Answer: less efficient code
Explanation:
When a programmer studies the specifications of a problem, then the programmer can then decide if the solution to the problem will require a nested selection structure or not.
One consequences of writing selection structures to include an unnecessary nested selection structure is that it produces a less efficient code.
A database has two tables Rand S with 100 tuples each. Exactly two transactions, 11 and T2, execute concurrently on the database. T1 inserts a tuple in R and after some time decides to abort. T2 computes the difference: SELECT count(*) from R - SELECT count(*) from s and inserts as many tuples in S. After the transactions complete, R has 100 tuples and S has 101 tuples. Which of the following is possible?
a. The transactions executed in the REPEATABLE READ isolation level.
b. The transactions executed in the READ UNCOMMITTED isolation level.
C. The transactions executed in the READ COMMITTED isolation level.
d. This outcome is not possible in any of these isolation levels.
Answer:
a. The transaction executed in the REPEATABLE READ isolation level.
Explanation:
Database management system are used by businesses to organize and handle large data. There are 3 types of DBMS :
1- Hierarchical Database management system
2- Network Database management system
3- Object oriented Database management system.
Can Algorithms Be Used Again?
Answer:
Explanation:Algorithms are aimed at optimizing everything. They can save lives, make things easier and conquer chaos. Still, experts worry they can also put too much control in the hands of corporations and governments, perpetuate bias, create filter bubbles, cut choices, creativity and serendipity, and could result in greater unemploymen
Answer: The algorithm must have an infinite number of steps because there are an infinite number of integers greater than one. It will run forever trying to count to infinity. Every algorithm must reach some operation that tells it to stop.
BADM-Provide a reflection of at least 500 words (or 2 pages double spaced) of how the knowledge, skills, or theories of this course have been applied, or could be applied, in a practical manner to your current work environment. If you are not currently working, share times when you have or could observe these theories and knowledge could be applied to an employment opportunity in your field of study.
Required:
Provide a 500 word (or 2 pages double spaced) minimum reflection.
Answer:
WooW We Have To All This Which Class can you Please tell
You are a high school student learning about computers and how to build them. As a class project, you have built a new computer. You power on your computer and begin to configure the system. After a short while, you notice smoke coming from the PC, and shortly after that, the computer stops working. After removing the computer case, you see that the CPU and surrounding areas are burnt and very hot. You realize that the costly mistake you made was not using a heat sink. When rebuilding your computer, which cooling systems would MOST efficiently remove heat from the CPU?
Answer:
You can use thermal paste, active heat sink, liquid pipes, and even a fan. These are just some that I've heard.
Explanation:
All of these are cooling and will stop the Central Processing Unit from overheating.
Hope this helps :)
When rebuilding your computer, the cooling systems which would most efficiently remove heat from the Central processing unit (CPU) are: cooling fan and thermal compounds.
A computer refers to an intelligent electronic device that is designed and developed to receive raw data as an input and then processes these data into an information (output) that is usable by an end user.
Basically, the main part of a computer are broadly divided into the following;
Input devices (peripherals). Output devices (peripherals). Motherboard. Memory and storage device.Central processing unit (CPU).A cooling device can be defined as a device that is designed and developed to efficiently remove or dissipate heat from the inside of a computer. The cooing system used in a computer are grouped into two
(2) main categories and these are:
I. Active cooling device: an example is a cooling fan.
II. Passive cooling device: an example is a heat sink.
In conclusion, the cooling systems which would most efficiently remove heat from the Central processing unit (CPU) are cooling fan and thermal compounds.
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An infographic displays the relative frequencies of the 100 most common emojis used in text messaging for each of the last 12 months. Which of the following conclusions cannot be drawn from such a representation of emoji usage?
a. You can determine the growth or decline in popularity of a particular emoji.
b. You can determine what percentage of text messages contains a particular emoji.
c. You can determine how long the most popular emoji has held the #1 position.
d. You can determine the average age of emoji users based on emoji use.
Answer:
d. you can determine the average age of emoji users based on emoji use.
Explanation:
The infographic displays 100 most common emoji used in text messaging. This information can be used to determine percentages of text message which contains particular emoji. This details can not determine the age of emoji user based in emoji use.
A. Describe four types of information that you can enter into a worksheet cell when using a spreadsheet package, giving specific examples.
Answer:
The first step of learning about spreadsheets is understanding the terminology you will encounter as you work through this lesson. The glossary below lists terms that are specific to spreadsheet applications. Terminology that we learned when we looked at wordprocessing (such as copy, paste, clipboard, etc.) also apply to spreadsheet applications.
QUESTION 4 PRACTICAL EXERSIZE
create a list of the types of computers and write a key characteristic down for each of them. For example LAPTOP- portable computer.
Answer:
Mainframe, Super Computer, Workstation, Personal Computer, Laptop computer and Tablet and Smartphone.
Explanation:
Mainframe Computer is high capacity and costly computer.
Super Computer is the fastest among all computer and also very expensive.
Workstation is a high-performance computer system that has advanced graphics capabilities, having large storage capacity and a powerful CPU.
Personal Computer is a computer whose size, capabilities, and price make it feasible for individual use.
Laptop computer is a type of computer which is portable, having high storage and very high speed.
Tablet and Smartphone is a type of computer which is also portable and can be kept in pocket.
Which of the following CALL instructions writes the contents of EAX to standard output as a signed decimal integer?
a. call WriteInteger
b. call WriteDec
c. call WriteHex
d. call WriteInt
Answer:
d. call WriteInt
Explanation:
Required
Instruction to write to decimal integer
Of the 4 instructions, the call WriteInt instruction is used write to a decimal integer.
This is so, because the WriteInt instruction writes a signed decimal integer to standard output.
This implies that the output will have a sign (positive or negative) and the output will start from a digit other than 0 (i.e. no leading zero)
2. Used to drive in or remove screws that fasten electrical wires or other electrical accessories. A. Pliers C. Screwdrivers B. Mechanical D. Multi-tester VOM
Answer:
the correct answer is C. screwdriver
The number of host addresses are available on the network 172.16.128.0 with a subnet mask of 255.255.252.0. Show the calculations.
Answer:
adress: 10101100.00010000.1 0000000.00000000
netmask: 11111111.11111111.1 0000000.00000000
Network: 172.16.128.0/17 10101100.00010000.1 0000000.00000000 (Class B)
Explanation:
ex: 10 -> 00001010
200 ->11001000
Ten examples of a compiler
Answer:
Compilers for AdaCompilers for ALGOL 60Compilers ALGOL 60 ALGOL 68ALGOL 60 ALGOL 68 Assemblers Compilers (Intel *86) Assembly.ALGOL 60 ALGOL 68 assemblers (Intel *86) assemblers (Motorola 68*) Assemblers.Compilers for ALGOL 60 Compilers for ALGOL 68 Assemblies (Motorola 68*) Assemblies (Intel *86) (Zilog Z80)Compilers ALGOL 60 Compilers for ALGOL 68 Intel *86 Assemblers Mounting machines (Motorola 68*) (Zilog Z80) Assemblers Assemblers (other)Compilers for ALGOL 60 Compilers for ALGOL 68 Assembled assemblers (Intel *86) (Motorola 68*) (Zilog Z80) Assemblers Assemblers (other) Compilers BASICCompilers for ALGOL 60 Compilers for ALGOL 68 Intel *86 Assembly Machines Motorola 68* Assemblers. Assemblies (Zilog Z80) Assemblers Assemblers (other) Compilers of BASIC Interpreters from the Basic.ALGOL 60 compilers ALGOL 68 Intel Compilers *86 Motorola 68* Assemblers Assembly Machines. Meetings of the assembly members (Zilog Z80) (other) BASIC Interpreter compilers from the fundamentalExplanation:
Compiler – The compiler is the language processor, which reads the whole of your source software, and translates it into an equivalent program in the machine language.
Ex: C, C++, C#, Java.
When free of errors, the source code of a compiler is successfully transposed into the object code. At the end of the build, when the source code has errors, the compiler indicates the errors. Before the compiler can successfully recompile source code, errors must be removed.
What is the third rule to normalize a database?
All primary keys must be based on filtered values.
All fields in the table must be included in the primary key.
Each primary key must be based on multiple fields in the table.
Each nonkey field must relate to the entire single-field primary key.
Answer is 4
Each nonkey field must relate to the entire single-field primary key
Answer:
4th option as u told
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