A sphere with radius R has a charge density given by

ρ = cr³.

Use Gauss's law to find an expression for the magnitude of the electric field at a distance r from the center of the sphere, where we have the following. (Use the following as necessary: c, r, R, and ε₀. Assume c is positive.)

(a)    

r < R

E =

  

(b)    

r > R

E =

Martinez Company’s relevant range of production is 7,500 units to 12,500 units. When it produces and sells 10,000 units, its average costs per unit are as follows: Average Cost per Unit

1. For financial accounting purposes, what is the total amount of product costs incurred to make 10,000 units? (Do not round intermediate calculations.)

2. For financial accounting purposes, what is the total amount of period costs incurred to sell 10,000 units? (Do not round intermediate calculations.)

3. If 8,000 units are produced and sold, what is the variable cost per unit produced and sold? (Round your answer to 2 decimal places.)

4. If 12,500 units are produced and sold, what is the variable cost per unit produced and sold? (Round your answer to 2 decimal places.)

5. If 8,000 units are produced and sold, what is the total amount of variable costs related to the units produced and sold? (Do not round intermediate calculations.)

6. If 12,500 units are produced and sold, what is the total amount of variable costs related to the units produced and sold? (Do not round intermediate calculations.)

7. If 8,000 units are produced, what is the average fixed manufacturing cost per unit produced?

8. If 12,500 units are produced, what is the average fixed manufacturing cost per unit produced? (Round your answer to 2 decimal places.)

9. If 8,000 units are produced, what is the total amount of fixed manufacturing cost incurred to support this level of production?

10. If 12,500 units are produced, what is the total amount of fixed manufacturing cost incurred to support this level of production?

11. If 8,000 units are produced, what is the total amount of manufacturing overhead cost incurred to support this level of production? What is this total amount expressed on a per unit basis? (Round your "per unit" answer to 2 decimal places and other answers to the nearest whole dollar amount.)

12. If 12,500 units are produced, what is the total amount of manufacturing overhead cost incurred to support this level of production? What is this total amount expressed on a per unit basis? (Round your "per unit" answer to 2 decimal places and other answers to the nearest whole dollar amount.)

13. If the selling price is $21.50 per unit, what is the contribution margin per unit? (Do not round intermediate calculations. Round your answer to 2 decimal places.)

14. If 11,000 units are produced, what are the total amounts of direct and indirect manufacturing costs incurred to support this level of production? (Do not round intermediate calculations.)

15. What incremental manufacturing cost will Martinez incur if it increases production from 10,000 to 10,001 units? (Round your answer to 2 decimal places.)

Which ideas of economics are captured by PPC?

By analyzing the PPC model, what are the lessons that countries can learn to increase their GDP?

24. Determine whether each of the P-boxes with the following permutation table is a straight P-box, a compression P-box, or an expansion P-box. Detail your reason.    

a). P-box:   

b). P-box:

Task

The task is to read a file, store the data into objects, and process the objects. The file is formatted as pairs of lines: the first line of each pair is the name of a student, and the second line is a list of grades. This data will be stored in a Grades object. The Grades class will have several methods for processing the data.

For example, if this is the contents of the file being processed:

Alice
87 99 96 99 86 96 77 95 70 88
Bob
73 78 76 80 99 96 73 96 76 78 78 92 93 75 93
Camila
99 94 85 99 99 93 81 95 76 80 77 79 98 72 98 97 92
Diego
76 97 72 92 86 86 89 85 81 87 76 80 89

then the following should be printed:

Alice [87, 99, 96, 99, 86, 96, 77, 95, 70, 88]
        Name:    Alice
        Length:  10
        Average: 89.30
        Median:  91.5
        Maximum: 99
        Mininum: 70
Bob [73, 78, 76, 80, 99, 96, 73, 96, 76, 78, 78, 92, 93, 75, 93]
        Name:    Bob
        Length:  15
        Average: 83.73
        Median:  78.0
        Maximum: 99
        Mininum: 73
Camila [99, 94, 85, 99, 99, 93, 81, 95, 76, 80, 77, 79, 98, 72, 98, 97, 92]
        Name:    Camila
        Length:  17
        Average: 89.06
        Median:  93.0
        Maximum: 99
        Mininum: 72
Diego [76, 97, 72, 92, 86, 86, 89, 85, 81, 87, 76, 80, 89]
        Name:    Diego
        Length:  13
        Average: 84.31
        Median:  86.0
        Maximum: 97
        Mininum: 72 
    

Reading in the Data

Assume that the name of the file is data.txt . In Eclipse, the file needs to be in the top directory of the project. Reading all the data in the file can be accomplished by a sequence of code like:

Scanner in = null;
try {
    in = new Scanner(new File("data.txt"));
} catch (FileNotFoundException exception) {
    System.err.println("failed to open data.txt");
    System.exit(1);
}
while (in.hasNext()) {
    String name = in.next();
    while (in.hasNextInt()) {
        int grade = in.nextInt();
    }
}    
        

Of course, you need to add code so that Grades objects are created with the data that is read.

Testing

Each Grades object you create should be tested with the following static method.

public static void testGrades(Grades grades) {
    System.out.println(grades.toString()); 
    System.out.printf("\tName:    %s\n", grades.getName());
    System.out.printf("\tLength:  %d\n", grades.length());
    System.out.printf("\tAverage: %.2f\n", grades.average());
    System.out.printf("\tMedian:  %.1f\n", grades.median());
    System.out.printf("\tMaximum: %d\n", grades.maximum());
    System.out.printf("\tMininum: %d\n", grades.minimum());
}

This method should be included in your Lab2.java file exactly as it appears. testGrades should be called on each Grades object after all of its data has been stored in it. Note that this code requires that you implement several methods within the Grades class. Note: thetoString method should return a String and should not contain any print statements within it. See the example output above.

Explain how a "cap and trade" system works. What are its virtues and drawbacks?

Develop a C++ program that determines the largest and second largest positive values in a collection of data

Prompt the user to enter integer values until they enter any negative value to quit

• You may presume the user will input at least two valid integer values

Create a loop structure of some sort to execute this input cycle

Maintain the largest and second largest integer as the user inputs data

• This logic should be placed inside your loop structure
• Arrays are not needed to solve the problem!

Display the largest and second largest values entered by the user

1)    A 2.00-kg package is released on a 53.1

list the names of 5 CASE tools used in Software Engineering. you have to show also its purpose, usage, components, .....

You have been hired by a small office to link their five computers in a network. All PC’s have Windows 10 installed. 2 GHz processor, 4 GB of memory, and an 1 TB hard drive. In addition, the office has purchased a simple eight port hub. Security is not a concern for this office. In short, the owners have asked for a simple, inexpensive solution.

1. What type of network would you recommend and why?
2. Discuss the similarities and differences between peer-to-peer and client server network.

Consider the student-section-takes DB for an education institution:

student(id, name, dept_name, tot_cred)

section(course_id, sec_id, semester, year, building. room_number, time_slot_id)

takes(ID, course_id, sec_id, semester, year, grade)

Give a SQL query for each of the following operations:

a. Find the buildings of sections taken by Shankar. (hint: join tables, Shankar is a student name)

b. Find all id's of students who have total credit of at least 100 or taken a course with course_id: CS-101 (hint: union)

c. Find the names of students who have not taken a course with course_id: CS-101. (hint: set difference)

d. Find the student id's of students with total credits over 80 who have not taken a course with course_id: CS-101. (hint: set difference)

What policies are in place to encourage immigration into the U.S.? What policies are in place to discourage immigration into the U.S.? What do you think of these policies?

Calculate the mean repeat unit molar mass for a sample of poly[ethylene-stat-(vinyl acetate)]that comprises 12.9 weight percentage (wt%) vinyl acetate repeat units. Given that its number-average molar mass is 39.870 g mol. calculate the number-average degree of polymerization of the copolymer.

Answer: mean repeat unit molar mass of the copolymer = 30.67 and the number-average degree of polymerization of the copolymer =1300