Question 3: Write the following Java program.

A. Create a class called Quadrilateral that contains the following: [4 Marks]

• Five double type data fields for: side1, side2, side3, side4, and perimeter

• A no-argument constructor that creates a Quadrilateral with all sides equal to 1

• Methods named setSide1(double s1), setSide2(double s2), setSide3(double s3), and

setSide4(double s4) to set the values of the four sides

• A method named calculatePerimeter( ) to calculate and return the perimeter of the

quadrilateral

B. Create a child class called Square that contains a method named calculateArea() to

calculate the area of the Square. [2 Marks]

C. Create a java main class named TestQuad to do the following: [4 Marks]

• Create a Quadrilateral object named Quad1 and a Square object named Sq1.

• Call the methods setSide1(double s1), setSide2(double s2), setSide3(double s3), and

setSide4(double s4) to:

o set the sides of Quad1 to 10, 20, 25, and 30, respectively

o set all sides of Sq1 to 3

• Display the perimeter of Quad1 by calling the method calculatePerimeter ( ). Display

the perimeter of Sq1 by calling the method calculatePerimeter ( ).

• Display the area of Sq1 by calling the method calculateArea()

Hint: Perimeter = sum of all sides & Area of Square = side * side

write an essay about Special Order Decisions in your own words.

A family is considering installing a household solar energy system. The system has an installed cost of $1700 and they reduce the homeowner’s energy bill by $400 per year. The residual value of the solar panels is $150 at the end of their 5-year life. What is the annual effective IRR of this investment? Assume the family has a MARR of 10%. Please use the interpolation method and only fill in the number of your calculated result in the blank, e.g., if the result is 7.537%, fill in “7.54”; also keep 2 digits after the decimal point.

The following is extracted information from financial statements of Kabuku Ltd for the years 2005 to 2009

Balance Sheet as at year end 31^st Dec

You are required to carry out the following analyses;

Common size balance sheet for the five years. and interpret.

Acid/Base Equilibrium - Weak Acids/Bases

1. Estimate the initial [HClO] in an aqueous solution in which the [OCl^-] is 0.0000114 M at equilibrium (make an exact calculationassuming that initial concentration is not equal to the equilibrium concentration).

(Constant = K_a=3.50×10^-8)

HClO = OCl^- + H⁺

^{_________________ M}

3. Calculate the molar concentration of H⁺ ion of a 1.31×10^-2 M solution of the weak acid HClO (make an exact calculationassuming that initial concentration is not equal to the equilibrium concentration). Round your answer to 3 significant digits.

(Constant = K_a=3.50×10^-8)

HClO = OCl^- + H⁺

he following costs result from the production and sale of 4,900 drum sets manufactured by Tight Drums Company for the year ended December 31, 2017. The drum sets sell for $340 each. The company has a 35% income tax rate.

Required:

1. Prepare a contribution margin income statement for the company.
2. Compute its contribution margin per unit and its contribution margin ratio.

How many grams of dry NH4Cl need to be added to 2.20 L of a 0.600 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.50? Kb for ammonia is 1.8×10−5.

Question 2 (1 point)

Saved

Your aunt tells you that she will give you $100 today. However, if you are willing to wait, she will give you $105 in one year. You are convinced your aunt will follow through, so there is no risk in waiting. In this case,

Question 2 options:

Question 8 (1 point)

Your friend needs a loan now and is willing to pay you back $150 in 1 year and another $150 in 2 years. (i.e. you will receive both payments) How much are you willing to lend your friend now if you want an interest rate of 6%?

Question 8 options:

Calculate ? H for the reaction: C4H4(g) + 2 H2(g) — > C4H8(g) ? H = ?

Given,

C4H4(g) + 5 O2(g) — > 4 CO2(g) + 2 H2O(l) DH = -2341 kJ

C4H8(g) + 6 O2(g) — > 4 CO2(g) + 4 H2O(l) DH = -2755 kJ

H2(g) + ½ O2(g) — > H2O(l) DH = -286 kJ

JAVA - Write a program that prompts the user (at the command line) for 4 positive integers, then draws a pie chart in a window. Convert the numbers to percentages of the numbers’ total sum; color each segment differently; use Arc2D. No text fields (other than the window title) are required. Provide a driver in a separate source file to test your class.

Please use the following:

java.lang.Object

java.awt.Graphics

java.awt.Graphics2D

Take note of the following:

setPaint

setStroke

fill

// imports

public class PieChartPanel extends JPanel {

// attributes

// constructor

public void paintComponent(Graphics g) {

super.paintComponent (g);

Graphics2D g2d = ( Graphics2D ) g;

...

}

There should be a paintComponent method that calls its parent

Computer Science Multiple Choice: Please complete all 5 questions in exchange for an immediate upvote. Incomplete answers will be downvoted so please move on if they aren't worth your time. Thank you!

1. A node that is the root of a balanced tree is called a(n) _____ node.
   1. balanced
   2. master
   3. search
   4. AVL
2. When there is an addition to a node’s right subtree that creates an unbalanced search tree, you can correct it with a(n)
   1. left rotation
   2. right rotation
   3. reheap
   4. sift up
3. What type of rotation do you need to rebalance an AVL tree if the addition that unbalanced the tree occurred in the left subtree of node N, the unbalanced node’s left child?
   1. left rotation
   2. right rotation
   3. right-left rotation
   4. left-right rotation
4. What type of rotation do you need to rebalance an AVL tree if the addition that unbalanced the tree occurred in the right subtree of node N, the unbalanced node’s left child?
   1. left rotation
   2. right rotation
   3. right-left rotation
   4. left-right rotation
5. What type of rotation do you need to rebalance an AVL tree if the addition that unbalanced the tree occurred in the left subtree of node N, the unbalanced node’s right child?
   1. left rotation
   2. right rotation
   3. right-left rotation
   4. left-right rotation

Note: The built-in character analysis functions (isdigit(), islower(),
etc.) may not be used.

Exercise 6.1 Write to an output file
Open an output file (stream) and write your identifying information to the
associated output file using a function. Put your standard output informa-
tion in a function named ShowHeader(). The file stream must be passed by
reference to the function. To do this, an & (ampersand) is used between the
data type (ofstream) and the name of the argument (I like to use fOut for
output file stream objects and fIn for input file stream object names).

Exercise 6.2 Read from an input file
Read/Process an input file a character at a time. Open an input file (stream)
and read a single character on each pass through a loop (a while() loop is
probably easiest) until the end of file is reached. After reading the character,
write it to the output file created earlier. The output should contain the
same characters as the input file.

Exercise 6.3 Character Analysis
Suggestion: Develop the remainder of this program in piecewise manner–
specifically, add one character analysis operation at a time, before adding
the next.
Analyze the characters in a file using functions to display their charac-
teristics, e.g., lower case, digit etc. The logic for analysis will be inside the
loop above.
Specifically, test if the character:
• is a letter.
• test if it is lower case or upper case.
• if the character is a letter, test if it is a vowel or consonant.
• is a digit.
• if the character is a digit, test if the value is odd or even.
• is a punctuation character.
• is a logical operator symbol.
Write a short function for most operations in the list above. If a character
is a letter, then it is either upper or lower case, so we only need to write one
function to test the case of the character. Do not use the built-in functions.

Note: there are no I/O (input/output) operations in the functions, only a
single character is examined.

Astronauts often see flashes when they are in space. How often these particles make their ways down to the Earth and hit us? What's the chance they hit our eyes and see flashes?

A hydrogen atom, initially at rest, absorbs an ultraviolet photon with a wavelength of λ=177.9nm.

Part A:

What is the atom's final speed if it now emits an identical photon in a direction that is perpendicular to the direction of motion of the original photon?

Express your answer to three significant figures and include appropriate units.

Part B:

What is the atom's final speed if it now emits an identical photon in a direction that is opposite to the direction of motion of the original photon?

Express your answer to three significant figures and include appropriate units.

==

Match the vocabulary word to its definition.

Question 4 options:

Put the following in the order they occur in making urine

Question 3 options: