PointList Class

Write a class named PointList that keeps a list of Point objects in an ArrayList. The PointList class should accept any object that is an instance of the Point class,, or a subclass of Point. Demonstrate the class in an application.

This is My point class….

public class Point<T>

{

   private T xCoordinate;

private T yCoordinate;

   public Point(T x, T y)

   {

   xCoordinate = x;

   yCoordinate = y;

   }

public void setX(T ){

       xCoordinate = x;

   }

   public void setY(T y) {

       yCoordinate = y;

   }

public T getX(){

       return xCoordinate;

   }

public T getY(){

   return yCoordinate;

   }

}

And this is the starting of my code…my teacher wants it this way

import java.util.ArrayList;

public final class PointList<T extends Point<? extends Number>>

{

ArrayList<T> arrList = new ArrayList<>();

}

With relevance to Organic Chemistry and acids and bases, can somebody teach me everything there is to know about pka?

A 7.50g bullet traveling at 490m/s embeds itself in a 1.59kg wooden block at rest on a frictionless surface. The block is attached to a spring with k = 89.0N/m

Find the Period

Find the amplitude of the subsequent simple harmonic motion.

Eric wants to estimate the percentage of elementary school children who have a social media account. He surveys 450 elementary school children and finds that 280 have a social media account.

Identify the values needed to calculate a confidence interval at the 99% confidence level. Then find the confidence interval.

Use the table of common z-scores above.

• Round the final answer to three decimal places.

Design a teaching plan about bike safety (helmet) for a community population. The reaching plan must have objectives, contents outline, learning development and activities and evaluation.

1. Estimate the labor hours required for a household with a moving size of 2000 CuFt and 6 Large Furniture
2. Based on the model output, we can say that both the size of the move (CuFt) and number of large furniture moved are important considerations when estimating the total number of labor hours required. We can make this claim because

• The FSTAT (F in the ANOVA Table) = 228.80, p-value (Sig.) is 0.00 = True or False?
• p-value for the slope coefficient of number of large furniture is 0.00 = True or False?
• p-value for the slope coefficient of the size of the mode (CuFt) is 0.00 = True or False?

3. Two households have the same moving volume (Cu Ft). One house has 5 large furniture to move while the second house has 8 large furniture to move. The average extra labor hours required for the second house is:

Aluminum hydroxide reacts with sulfuric acid as follows: 2Al(OH)3(s)+3H2SO4(aq)→Al2(SO4)3(aq)+6H2O(l)

1)How many moles of Al2(SO4)3 can form under these conditions?

2)How many moles of the excess reactant remain after the completion of the reaction?

Thank you!!

Variable Costs, Contribution Margin, Contribution Margin Ratio

Super-Tees Company plans to sell 13,000 T-shirts at $16 each in the coming year. Product costs include:

Variable selling expense is the redemption of a coupon, which averages $0.80 per T-shirt; fixed selling and administrative expenses total $14,000.

Required:

1. Calculate the following values:
Round dollar amounts to the nearest cent and round ratio values to three decimal places (express the ratio as a decimal rather than a percentage).

2. Prepare a contribution-margin-based income statement for Super-Tees Company for the coming year. If required, round your per unit answers to the nearest cent.

3. What if the per unit selling expense increased from $0.80 to $1.75? Calculate new values for the following:
Round dollar amounts to the nearest cent and round ratio values to four decimal places (express the ratio as a decimal rather than a percentage):

Please Show calculations and work

Company has budgeted the following unit sales:

                           2019                                     Units  

                        January                                      10,000

                        February                                      8,000

                        March                                         9,000

                        April                                          11,000

                        May                                          15,000

The finished goods units on hand on December 31, 2018, was 2,000 units. Each unit requires 2 pounds of raw materials that are estimated to cost an average of $4 per pound. It is the company's policy to maintain a finished goods inventory at the end of each month equal to 20% of next month's anticipated sales. They also have a policy of maintaining a raw materials inventory at the end of each month equal to 30% of the pounds needed for the following month's production. There were 5,760 pounds of raw materials on hand at December 31, 2018.

1. Prepare a production budget for January and February.

2. Prepare a direct materials budget for January and February

Discuss the benefits of the multiple types of e-payment system to the customers?

A 22 g ball with a radius of 29 mm rolls back and forth in a hemispherical bowl of radius 6 cm.

(a) What is the period of the oscillation if the ball is solid?


(b) What is the period of the oscillation if the ball is hollow?


(c) What is the percent difference between the two?

Two objects are moving in the xy-plane. The first, with mass 2.8 kg, has a velocity v₁ = (-2.0 m/s) i + (-3.5 m/s) j; the second object, with mass 1.5 kg, has velocity v₂ = (2.1 m/s) i + (-1.5 m/s) j.

(a) What is the total momentum of the system?
( -2.45 i + -12.05 j) kg·m/s

(b) If the system observed at a later time shows that the 2.8 kg object has v'₁ = (2.0 m/s) i, what is the velocity of the 1.5 kg object?
( ? i + ? j) m/s

(c) Consider again the initial situation. Now suppose that there has been a mass transfer, so that the first object now has a mass of 2.6 kg. The total mass is conserved. What is v'₁ if the velocity of the second object is (-2.5 m/s) j + (1.3 m/s) k?
(? i +? j +? k) m/s

(d) Calculate the sum of the kinetic energies in the initial configuration and in the configurations of parts (b) and (c).
Configuration (a)
? J
Configuration (b)
? J
Configuration (c)
? J

What of the following statements is true for refracting telescopes?

• The main focusing optical piece is a mirror
• It is mostly used by professional astronomers
• The main focusing optical piece is lenses
• It is easy to build a large telescope.

Driver’s License Exam 20PTS PYTHON AND FLOWCHART The local driver’s license office has asked you to design a program that grades the written portion of the driver’s license exam. The exam has 20 multiple choice questions. Here are the correct answers: 1.B 6.A 11.B 16.C 2.D 7.B 12.C 17.C 3.A 8.A 13.D 18.B 4.A 9.C 14.A 19.D 5.C 10.D 15.D 20.A Your program should store these correct answers in an array. (Store each question’s correct answer in an element of a String array.) The program should ask the user to enter the student’s answers for each of the 20 questions, which should be stored in another array. After the student’s answers have been entered, the program should display a message indicating whether the student passed or failed the exam.(A student must correctly answer 15 of the 20 questions to pass the exam.) It should then display the total number of correctly answered questions, the total number of incorrectly answered questions, and a list showing the question numbers of the incorrectly answered questions.

******Need Python code

***** Need pseudocode and flowgorithm flowchart