Help please i need it before tomorrow if possible

Enthalpy Changes the overall energy change in the substance portrayed in the graph at  48°C.

Mass (m) = 0.3 Kg

Initial temperature (T1) = 20°C

Heat (Q) added = 35 KJ

Specific heat capacity (C) = 4.18 KJ/Kg°C

Final temperature (T2)

The final temperature of water can be obtained as follow:

Q = MC(T2 – T1)

35 = 0.3 x 4.18 (T2 – 20)

35 = 1.254 (T2 – 20)

Clear the bracket

35 = 1.254T2 – 25.08

Collect like terms

1254T2 = 35 + 25.08

1.254T2 = 60.08

Divide both side by the coefficient of T2 i.e 1.254

T2 = 60.08/1.254

T2 = 47.9 ≈ 48°C

Therefore, the final temperature of the water is 48°C.

Learn more about temperature on:

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Which of the following describes a codec? Choose all that apply.
a computer program that saves a digital audio file as a specific audio file format
short for coder-decoder
converts audio files, but does not compress them

Write a SELECT statement that displays each product purchased, the category of the product, the number of each product purchased, the maximum discount of each product, and the total price from all orders of the item for each product purchased. Include a final row that gives the same information over all products (a single row that provides cumulative information from all your rows). For the Maximum Discount and Order Total columns, round the values so that they only have two decimal spaces. Your result

In java I need help on this specific code for this lab.


Problem 1:


Create a Class named Array2D with two instance methods:


public double[] rowAvg(int[][] array)


This method will receive a 2D array of integers, and will return a 1D array of doubles containing the average per row of the 2D array argument.


The method will adjust automatically to different sizes of rectangular 2D arrays.


Example: Using the following array for testing:


int [][] testArray =

{

{ 1, 2, 3, 4, 6},

{ 6, 7, 8, 9, 11},

{11, 12, 13, 14, 16}

};

must yield the following results:


Averages per row 1 : 3.20

Averages per row 2 : 8.20

Averages per row 3 : 13.20

While using this other array:


double[][] testArray =

{

{1, 2},

{4, 5},

{7, 8},

{3, 4}

};


must yield the following results:


Averages per row 1 : 1.50

Averages per row 2 : 4.50

Averages per row 3 : 7.50

Averages per row 4 : 3.50

public double[] colAvg(int[][] array)


This method will receive a 2D array of integers, and will return a 1D array of doubles containing the average per column of the 2D array argument.


The method will adjust automatically to different sizes of rectangular 2D arrays.


Example: Using the following array for testing:


int [][] testArray =

{

{ 1, 2, 3, 4, 6},

{ 6, 7, 8, 9, 11},

{11, 12, 13, 14, 16}

};

must yield the following results:


Averages per column 1: 6.00

Averages per column 2: 7.00

Averages per column 3: 8.00

Averages per column 4: 9.00

Averages per column 5: 11.00

While using this other array:


double[][] testArray =

{

{1, 2},

{4, 5},

{7, 8},

{3, 4}

};


must yield the following results:


Averages per column 1: 3.75

Averages per column 2: 4.75



My code is:


public class ArrayDemo2dd

{


public static void main(String[] args)

{

int [][] testArray1 =

{

{1, 2, 3, 4, 6},

{6, 7, 8, 9, 11},

{11, 12, 13, 14, 16}

};

int[][] testArray2 =

{

{1, 2 },

{4, 5},

{7, 8},

{3,4}

};


// The outer loop drives through the array row by row

// testArray1.length has the number of rows or the array

for (int row =0; row < testArray1.length; row++)

{

double sum =0;

// The inner loop uses the same row, then traverses all the columns of that row.

// testArray1[row].length has the number of columns of each row.

for(int col =0 ; col < testArray1[row].length; col++)

{

// An accumulator adds all the elements of each row

sum = sum + testArray1[row][col];

}

//The average per row is calculated dividing the total by the number of columns

System.out.println(sum/testArray1[row].length);

}

} // end of main()


}// end of class


However, it says there's an error... I'm not sure how to exactly do this type of code... So from my understanding do we convert it?

How was the first computer reprogrammed

Suppose you are choosing between the following three algorithms:
• Algorithm A solves problems by dividing them into five subproblems of half the size, recursively solving each subproblem, and then combining the solutions in linear time.
• Algorithm B solves problems of size n by recursively solving two subproblems of size n − 1 and then combining the solutions in constant time.
• Algorithm C solves problems of size n by dividing them into nine sub-problems of size n=3, recursively solving each sub-problem, and then combining the solutions in O(n2) time.
What are the running times of each of these algorithms (in big-O notation), and which would you choose?

PLEASE HELP!!!
Question 6:
A retailer of computers maintains a record containing the following information for every individual
computer sold
• Manufacturer name
• Model number
• Physical memory size
• Processor name
• Date of sale
• Price sold for
Using only the database, which of the following CANNOT be determined?
The average price of a computer was sold by the retailer
In which months less than 100 computers were sold
o Which models of computer stocked by the retailer have not had a single sale
The most popular model of computer sold by the retailer

Joseph learned in his physics class that centimeter is a smaller unit of length and a hundred centimeters group to form a larger unit of length called a meter. Joseph recollected that in computer science, a bit is the smallest unit of data storage and a group of eight bits forms a larger unit. Which term refers to a group of eight binary digits? A. bit B. byte O C. kilobyte D. megabyte​

An example of a host-based intrusion detection tool is the tripwire program. This is a file integrity checking tool that scans files and directories on the system on a regular basis and notifies the administrator of any changes. It uses a protected database of cryptographic checksums for each file checked and compares this value with that recomputed on each file as it is scanned. It must be configured with a list of files and directories to check and what changes, if any, are permissible to each. It can allow, for example, log files to have new entries appended, but not for existing entries to be changed. What are the advantages and disadvantages of using such a tool? Consider the problem of determining which files should only change rarely, which files may change more often and how, and which change frequently and hence cannot be checked. Hence consider the amount of work in both the configuration of the program and on the system administrator monitoring the responses generated.

Which of the following transfer rates is the FASTEST?
1,282 Kbps
O 1,480 Mbps
1.24 Gbps
181 Mbps

How does it relate
to public domain
and fair use?

A non-profit organization decides to use an accounting software solution designed for non-profits. The solution is hosted on a commercial provider's site but the accounting information suchas the general ledger is stored at the non-profit organization's network. Access to the software application is done through an interface that uses a coneventional web browser. The solution is being used by many other non-profit. Which security structure is likely to be in place:

Complete the problem about Olivia, the social worker, in this problem set. Then determine the telecommunications tool that would best meet Olivia's needs.


PDA

VoIP

facsimile

Internet

Consider the following two relations for Millennium College

STUDENT(StudentID, StudentName,CampusAddress, GPA)
REGISTRATION(StudentID, CourseID, Grade)

Following is a typical query against these Relation:

SELECT Student_T.StudentID,StudentName,
CourseID, Grade
FROM Sudent_T, Registration_T
WHERE Student_T.StudentID =
Registration_T.StudentID
AND GPA> 3.0
ORDER BY StudentName;

Required:
On what attributes should indexes be defined to speed up this Query? PLease give reasons for each selected

Discuss the relationship of culture and trends?

What is the difference between an information system and a computer application?

This lab was designed to teach you more about using Scanner to chop up Strings. Lab Description : Take a group of numbers all on the same line and average the numbers. First, total up all of the numbers. Then, take the total and divide that by the number of numbers. Format the average to three decimal places Sample Data : 9 10 5 20 11 22 33 44 55 66 77 4B 52 29 10D 50 29 D 100 90 95 98 100 97 Files Needed :: Average.java AverageRunner.java Sample Output: 9 10 5 20 average = 11.000 11 22 33 44 55 66 77 average = 44.000 48 52 29 100 50 29 average - 51.333 0 average - 0.000 100 90 95 98 100 97 average - 96.667

Which of the follwing are examples of meta-reasoning?
A. She has been gone long so she must have gone far.
B. Since I usually make the wrong decision and the last two decisions I made were correct, I will reverse my next decision.
C. I am getting tired so I am probably not thinking clearly.
D. I am getting tired so I will probably take a nap.

what materials can I find at home and make a cell phone tower​

Earl develops a virus tester which is very good. It detects and repairs all known viruses. He makes the software and its source code available on the web for free and he also publishes an article on it. Jake reads the article and downloads a copy. He figures out how it works, downloads the source code and makes several changes to enhance it. After this, Jake sends Earl a copy of the modified software together with an explanation. Jake then puts a copy on the web, explains what he has done and gives appropriate credit to Earl.
Discuss whether or not you think Earl or Jake has done anything wrong?

the
Wnte
that
Program
will accept three
Values of
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from
User and determine whether Values
carceles, equal atera or sealen
- Outrast of your
a
are for
an​

Write a recursive method called permut that accepts two integers n and r as parameters and returns the number of unique permutations of r items from a group of n items. For given values of n and r, this value P(n, r) can be computed as follows:
n!/(n - r)!
For example , permut (7, 4) should return 840.

Create a recursive procedure named (accumulator oddsum next). The procedure will return the sum of the odd numbers entered from the keyboard. The procedure will read a sequence of numbers from the keyboard, where parameter oddsum will keep track of the sum from the odd numbers entered so far and parameter next will (read) the next number from the keyboard.

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i. Control ii. Sound iii. Pen​

Which of the following techniques is a direct benefit of using Design Patterns? Please choose all that apply Design patterns help you write code faster by providing a clear idea of how to implement the design. Design patterns encourage more readible and maintainable code by following well-understood solutions. Design patterns provide a common language / vocabulary for programmers. Solutions using design patterns are easier to test

Animation timing is does not affect the
speed of the presentation
Select one:
True
False​

SOMEONE PLS HELP?!?!!

4.5.2 For loop: printing a dictionary python

Create a list of 30 words, phrases and company names commonly found in phishing messages. Assign a point value to each based on your estimate of its likeliness to be in a phishing message (e.g., one point if it’s somewhat likely, two points if moderately likely, or three points if highly likely). Write a program that scans a file of text for these terms and phrases. For each occurrence of a keyword or phrase within the text file, add the assigned point value to the total points for that word or phrase. For each keyword or phrase found, output one line with the word or phrase, the number of occurrences and the point total. Then show the point total for the entire message. Does your program assign a high point total to some actual phishing e-mails you’ve received? Does it assign a high point total to some legitimate e-mails you’ve received?

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