Derive, from the concept of the total energy of a system, the total energy of an oscillating system in terms of k and amplitude. (show all steps begging to end on how you get the equation and answer)

Give an example of a situation(scenario) where you need to use a database to store data. Explain clearly. (Min 500 words)

Subject:Database System

urgent

1. In the 1970s Dr. J Robin Warren used a technique not widely used by pathologists at the time, which allowed him to make novel observations that ultimately resulted in a new treatment for ulcers. What was this technique?

Select one:

a. The use of a fistula to see inside the stomach

b. The use of a high-power microscope

c. The use of a stain for visualizing bacteria

2. Darwin's observations in the Pampas grasslands of Argentina led him to the conclusion that

Select one:

a. species change through time.

b. species change with geographical distance.

c. the Earth must be much older than was widely believed at the time.

d. climate alone cannot account for the distribution of species.

e. similar species tend to be geographically clustered.

3. Which of the following historical figures argued that species were not fixed, i.e. able to change over time into new species?

Select one:

a. Cuvier

b. Aristotle

c. Hutton

d. Lamarck

e. Linnaeus

Monarch butterflies belong to the genus Danaus, the order Lepidoptera, the class Insecta and the family Nymphalidae. All members of the family Nymphalidae have brush-like hairs on their lower legs. The same brush-like hairs will be found on the lower legs of any other member of

Select one:

a. the genus Danaus

b. the class Insecta

c. All of these

d. the order Lepidoptera

The scientific name of the dove tree is Davidia involucrata Baillon. The word "Baillon" in this name is

Select one:

a. the subspecific epithet

b. the genus

c. the authority

d. the specific epithet

Activity-Based Costing, Unit Cost, Ending Work-in-Process Inventory Salazar Company is a job-order costing firm that uses activity-based costing to apply overhead to jobs. Salazar identified three overhead activities and related drivers. Budgeted information for the year is as follows: Activity Cost Driver Amount of Driver Setting up design $168,000 Setups 1,200 Purchasing 186,000 Number of parts 15,000 Other overhead 415,000 Direct labor hours 50,000 Salazar worked on five jobs in March. Data are as follows: Job 15 Job 16 Job 17 Job 18 Job 19 Balance, March 1 $34,600 $39,890 $24,090 $0 $0 Direct materials $28,000 $37,900 $25,350 $11,000 $13,550 Direct labor $10,000 $8,500 $23,000 $12,700 $8,000 Setups 20 14 35 8 15 Number of parts 150 180 200 500 300 Direct labor hours 650 580 1,600 870 520 By March 31, Jobs 15, 16, and 17 were completed and sold. The remaining jobs were in process. Required: 1. Calculate the activity rates for each of the three overhead activities. If required, round your answers to the nearest cent. Setup rate $ 140 per set up Purchasing rate $ 12.4 per part Other overhead rate $ 8.3 per direct labor hour Feedback 1. Remember OH rate = estimated annual OH ÷ by the related driver. 2. Prepare job-order cost sheets for each job showing all costs through March 31. What is the cost of each job by the end of March?. If an amount is zero, enter "0". Salazar Company Job-Order Cost Sheets Job 15 Job 16 Job 17 Job 18 Job 19 Balance, March 1 $ 34,600 $ 39,890 $ 24,090 $ 0 $ 0 Direct materials 28,000 37,900 25,350 11,000 13,550 Direct labor 10,000 8,500 23,000 12,700 8,000 Applied overhead: Setups Purchasing Other overhead Total cost $ $ $ $ $ Feedback 2. The job-order cost sheet must include a unique number or name for this particular job, all direct costs, and all overhead costs associated with the job. 3. Calculate the balance in Work in Process on March 31. $ 4. Calculate the cost of goods sold for March. $

Discuss what strategies you could implement to create an evidence-based practice culture in your workplace. What steps can you take after leaving school to continue your evidence-based practice learning?

Make a class whose objects each represent a box of bricks. Also, the class has to include the following services for its objects:

show what's in the box

get the weight of the box

determine if two boxes are equal

Presented Below is Information related to Matrix Company at December 31,2018 the end of its first year of operations:

Account Balance

Question 1: What is income from continuing operations?

Question 2: What is the difference between continuing operations and net income?

The Space Shuttle travels at a speed of about 7.8 ✕ 10³ m/s. The blink of an astronaut's eye lasts about 120 ms. How many football fields (length = 91.4 m) does the Shuttle cover in the blink of an eye?

_____Football Fields

What are the values for the spin-angular-momentum and the orientation of the spin- angular-momentum for a ground-state hydrogen electron? Sketch a picture to display the electron orientation.

A battery is constructed based on the oxidation of magnesium and the reduction of Cu2+. The initial concentrations of Mg2+ and Cu2+ are 1.1×10−4 M and 1.6 M , respectively, in 1.0-liter half-cells.

PART A: What is the initial voltage of the battery?

PART B: What is the voltage of the battery after delivering 4.7 A for 8.0 h ?

PART C: How long can the battery deliver 4.7 A before going dead?

$$$$$$$$$$$$$$ please write in C# $$$$$$$$$$$$$$$

Write a program to keep track of a hardware store’s inventory. You will need to create necessary classes for handling the data and a separate client class with the main method.

The store sells various items. For each item in the store, the following information is maintained: item ID, item name, number of pieces currently in the store, manufacturer’s price of the item and the store’s selling price. Create a class Item to store the information about the items. Provide appropriate setters and getters. Override the toString() method.

Create a class Inventory that contains a vector of items. This class will contain a bunch of methods to help build the application. Create a static variable to keep track of the total different items in inventory. Every time a new item is added to the inventory this variable has to be updated.

1. A method to create 5 Item objects by initializing the following properties of Item and returning a vector of Item.

ItemID,itemName,pInstore,manufPrice,sellingPrice

2. A method to check whether an item is in the store by doing a lookup in the vector.
3. A method to update the quantity on hand for the item being sold
4. A method to report the quantity on hand for any item requested during purchase
5. A method to print the report for the manager in the following format

ItemID     itemName               pInstore        manufPrice     sellingPrice

12            Circular saw            150               45.00      125.00

235        Cooking Range          50                450.0             850.00

.

Total Inventory: $####.##

Total number of items in the store:

The total inventory is the total selling value of all the items currently in the store. The total number of items is the sum of the number of pieces of all items in the store.

Create a separate client class with the main method, display the menu and use switch case statement to execute appropriate method. The main method should display a menu with the following choices such as:

1. Check whether an item is in the store
2. Sell an item
3. Print the report

For option 1, the user must also be prompted for the itemID. You will then call the method created in the Inventory class.

For option 2, verify if pInstore > qtyOrdered. You will invoke the method created in Inventory class.

For option 3, display the report. Again, this is nothing but executing method from Inventory class.

Also after an item is sold update the appropriate counts. Initially, the number of pieces in the store is the same as the number of pieces ordered and the number of pieces of an item sold is zero. You will use the utility method created as part of Inventory class.

Create an application named SalesLeader.

Add a class to your project called SalesPerson. (The default class may be called Program. Do not change this)

The SalesPerson class contains the following Properties:

FirstName - The salesperson's firs name (as a string)

SalesAmount - The sales amount ( as a double)

SalesArea - The 3 areas are the enumeration West Coast, MidWest, and East Coast.

Add a constructor which sets FirstName to "None", SalesAmount to 0 and SalesArea to MidWest.

Add a method which checks if the SalesAmount is greater than $100,000. If so, add 10% to the SalesAmount.

In the main class (Program), create the following:

Create 3 objects from SalesPerson.

                salesperson1

                salesperson2

                salesperson3

Prompt the user to set the amount of sales, first name and sales area for each object.

Display the name, sales amount and area for each sales person. Display which sales person is the Sales Leader this month and their commission (15% of total sales) … but first, add a method SalesLeaderTie to Program class to check if there might be a tie for Sales Leader. (Write Code in C#).

How would your ecological footprint be different if you lived in a less industrialized country?

1- How does the demand curve show the marginal benefit received by consumers?

2- How does a supply curve show the marginal cost to producers?

3- What is a perfectly competitive market?

4- What can eliminate a shortage?

5-What can reduce a surplus?