mdasfaaruddinshareef

which statement regarding hard drives is incorrect?

1. The 3.5" size is typically used in desktops;
2. A Solid-State drive has no moving parts;
3. Solid-State drives are less expensive than magnetic hard drives;
4. Tracks on a hard drive are divided into sectors

What is the most used rail on a power supply?

how many pins are in the power supply connector that is typically used on most motherboards today?

what type of connector is not typically found on the front panel header?

Lists, Tuples, and Sets in Python

Tuples vs Sets

Tuples:

Ordered collection of objects, allow duplicate values

Immutable (can't be changed after creation)

Example of Tuples:

my_tuple = ("apple", "banana", "cherry", "apple")

Sets:

Unordered collection of unique objects

Mutable (can be changed after creation)

Example of Sets:

my_set = {"apple", "banana", "cherry"}

Lists, Tuples, and Sets

Lists:

Ordered collection of objects, allow duplicate values

Mutable (can be changed after creation)

Example of Lists:

my_list = ["apple", "banana", "cherry", "apple"]

Tuples and their Immutability:

Tuples are immutable, meaning that once they are created, their values cannot be changed.

Useful for data that should not be altered.

Tuples use less memory than lists.

Sets and their Uniqueness:

Sets are unordered collections with no duplicate elements.

Good for finding unique elements of a larger collection.

Sets can do fast membership tests (O(1)).

That's it! These notes summarize the main differences between Lists, Tuples, and Sets in Python, and cover Tuples vs Sets in more detail.

Tuples vs Sets in Python

Lists, Tuples, and Sets

In Python, we have several data structures available for organizing and storing data. Three of the most common are:

Lists

Tuples

Sets

Key Differences

Tuples and Sets each have their unique properties that make them different from Lists and from each other.

Tuples and their Immutability

Tuples are ordered, immutable sequences of elements, which can be of any data type. Once a Tuple is created, it cannot be modified.

Here is an example of creating a Tuple:

my_tuple = (1, 'apple', 3.14)

Accessing Tuple Elements

To access elements in a Tuple, use indexing, just like Lists:

print(my_tuple[1]) # Output: 'apple'

Sets and their Uniqueness

Sets are unordered collections of unique elements. They can only contain unique elements, and duplicates are discarded. Sets are useful when you want to ensure that there are no duplicate items or when you need to quickly perform set operations like union, intersection, or difference.

Here is an example of creating a Set:

my_set = {1, 2, 3, 3, 3, 'apple', 'apple'}

print(my_set) # Output: {1, 2, 3, 'apple'}

In the example above, note that 'apple' is only printed once, and the number '3' only appears once as well.

Accessing Set Elements

To access elements in a Set, you need to convert it to a List or iterate over it, since sets are unordered collections and do not support indexing.

my_list = list(my_set)

print(my_list[0]) # Output (unpredictable): 1 or 2 or 3

Advantages of Tuples

Immutable: Cannot be changed after being created.

Efficient: Since Tuples cannot change, Python does not have to create a new object when an element is changed, making Tuples faster to access in certain cases.

Used in function arguments when you know the values should not be changed.

Advantages of Sets

Unique items only.

Efficient for set operations.

Fast membership test thanks to the hash table data structure used by sets.

Common Operations

| Operation | Lists | Tuples | Sets | | ------------ | -------- | ------ | ------ | | Index access | Support | Support | Not supported | | Append | Support | Not supported | Not supported | | Insert | Support | Not supported | Not supported | | Remove | Support | Not supported | Support through discarding duplicates | | Membership | Support | Support | Support |

When to use what?

Use Tuples when the data should not change, and you require fast access to elements.

Use Sets if you need to check for membership, quickly find intersections, unions, and differences, or if you need an unordered data structure with unique items.

Use Lists if the data may be changed, and you need consistent order.

In a 200 words or less explain the differences between SQL and PL/SQL? Why do we need SQL in a procedural language?

2. Respond to the following in 100 words-APA Format and Cite work

SA

SQL, is a structured query language that is used to retrieve and manipulate data as well as create and modify objects in a database. There are some capabilities for logic in SQL statements such as case and decode statements, but it is very limited. PL/SQL is a procedural language that has many more logic options available such as if-else statements and for loops. However, PL/SQL isn't very useful without SQL to retrieve and manipulate the data. For instance, you can use SQL to retrieve a value from a table and based on the value; use an if-else statement to choose to update a value in another table or not. PL/SQL also has a few other features that make it more efficient than just SQL alone. One being that PL/SQL transmits multiple SQL statements at one time in a block whereas SQL sends each statement separately thus saving bandwidth. Another is that PL/SQL that is stored in the database as a program unit is stored in executable form and is cached in memory making it more efficient to run (Casteel, 2013, pp. 3-4).

Reference:

Casteel, 1. (2013). Oracle 11g: PL/SQL. programming. Boston, MA: Course Technology, Cengage Learning.

3. Respond to the following in 100 words-APA Format and Cite work

Structured Query Language (SQL) is used primarily to conduct various actions within a database. These actions are typically categorized as data manipulation (DML), data definition (DDL). querying, and transaction control. DML include

s actions like

What is the difference between a stack and a queue?

Explain the concept of polymorphism in object-oriented programming.

A petty cash fund was originally established with a check for $100. On August 31, which is the period end, the petty cash fund included the following:

Petty cash receipts:

Postage

$43.50

Office supplies

11.85

Office equipment repair

39.00

Cash

4.25

Prepare the journal entry to record the establishment of the petty cash account.

Prepare the general journal entry to record the replenishment of the petty cash fund on August 31.

1. A class consists of 48 male students and 23 female students. Find the ratio of

female students to total strength of the class.

(a)

23:48

О

(b) 48:23

O

(c)

48:71

O

(d) 23:71

O

2. If 4, 6, p, 27, q are in continued proportion, find the values of p and q.

(a)

p = 9, q = 9

О

(b) p = 9, q = 81

O

(c)

p = 81, q = 9

O

(d) p = 81, q = 81

O

3. If a Stadium having spectators divided into groups of Young Generation and Old

Generation and the number of young spectators are 1525 and old spectators are

1875. Find the ratio of Total Spectators to Young Spectators.

(a)

136:75

О

(b) 136:85

O

(c)

75:61

O

(d) 136:61

O

4. Find two numbers whose mean proportional is 8 and the 1st number is square of

the 2nd number.

(a)

8,8

О

(b) 4,2

O

(c)

16,4

O

(d) 64,8

O

5. The ratio of the pocket money saved by Rakesh and his sister is 5:6. If the sister

saves ₹60 more, how much more the brother should save in order to keep the ratio

of their savings unchanged?

(a)

₹60

О

(b) ₹40

O

(c)

₹50

O

(d) ₹70

Define taxation 

Camden Company is a retail company that specializes in selling outdoor camping equipment. The company is considering opening a new store on October 1, year 1. The company president formed a planning committee to prepare a master budget for the first three months of operation. As budget coordinator, you have been assigned the following tasks.
 

Required

1. October sales are estimated to be $125,000, of which 40 percent will be cash and 60 percent will be credit. The company expects sales to increase at the rate of 8 percent per month. Prepare a sales budget.

2. The company expects to collect 100 percent of the accounts receivable generated by credit sales in the month following the sale. Prepare a schedule of cash receipts.

3. The cost of goods sold is 60 percent of sales. The company desires to maintain a minimum ending inventory equal to 10 percent of the next month’s cost of goods sold. However, ending inventory of December is expected to be $6,000. Assume that all purchases are made on account. Prepare an inventory purchases budget.

4. The company pays 70 percent of accounts payable in the month of purchase and the remaining 30 percent in the following month. Prepare a cash payments budget for inventory purchases.

5. Budgeted selling and administrative expenses per month follow.

What is symmetric and asymmetric encryption ?

DuPont Analysis If Epic, Inc. has an ROE = 32%, equity multiplier = 3.3, a profit margin of 12.7%, what is the total asset turnover ratio? (Round your answer to 4 decimal places.)
0.7360
0.1310
0.7635
0.0831

(Dupont Analysis) if Frim B has an ROE= 19.7%, equity multiplier = 2, a profit margin of 10%, what is the total asset turnover ratio?

DuPont Identity: Jiminy Cricket Removal has a profit margin of 10 percent, total asset turnover of 1.35, and ROE of 15.70 percent. What is this firm’s debt-equity ratio?

The Dupont Company has a profit margin of 5%, a total asset turnover of 1.5, and a Debt-Equity ratio of .75. What is the ROE? (Should be a percentage)

The DuPont Approach breaks down the earning power on shareholders'book value (ROE) as follows: ROE = __________.



? Net profit margin × Total asset turnover × Equitymultiplier

? Total asset turnover × Gross profit margin × Debt ratio

? Total asset turnover × Net profit margin

? Total asset turnover × Gross profit margin × Equity multiplier

6. Explain the possible causes of the trends in the following data:

Explain the following, stating clearly their significance to the organisation, shareholders, and implications for investors.  

1. Gross Profit Margin

2. Net Profit Margin

• Would the CM approach better assist management in ensuring all costs are covered? Under absorption costing, FC would become inventoriable and thus buried when production exceeds sales. Conversely, under the CM approach, FC is treated as period costs, making it less likely to overstate profits. What are your thoughts on this topic?

Why is Pythagoras theorem important? 

The Laplace transform can be applied to both linear and non linear differential equations.

True

False

A firm has days' sales in inventory of 105 days, an average collection period of 35 days, and takes 42 days, on average, to pay its accounts payable. Taken together, what do these three figures imply about the firm's operations and its cash flows?

Pythagoras theorem simple method

A mixture is prepared that is 5.0% (w/w) of an unknown substance mixed with naphthalene (molar mass = 128.2 g mol^-1). The freezing
point of this mixture is found to be 77.3 °C. What is the molar mass of the unknown substance? (The melting point of naphthalene is 80.2 °C and Kf = 6.9 °C m^-1.)
The molar mass of the unknown substance =

Definition of production possibility curve and it's assumptions 

Pet Emporium had a robbery on the weekend in which a large amount of inventory was taken. The loss is covered completely by insurance. A physical inventory count determined that the cost of the remaining merchandise is $58,100. The following additional information is available:
 

Required:
1. Prepare an estimate of ending merchandise inventory using the retail method.

2. Calculate the cost of the stolen inventory.

calculate the molarity of an HCI solution if 26.4 mL of the solution neutralizes 30.0 mL of a 0.120 molar solution of Ba(OH)2

All of the following are found in saliva except:

a. mucin 

b. salivary amylase 

c. pepsin 

d. bicarbonate

Q :  

Who was made the Nawab of Bengal following the Battle of Plassey?

(A) Mir Jafar

(B) Alivardi Khan

(C) Sirajuddaulah

(D) Mir Qasim

Q :  

Which of the following concepts implies that sustainable development should take a holistic approach towards notions of progress and give equal importance to non-economic aspects of wellbeing?

(A) Gross Domestic Product

(B) Gross National Product

(C) Gross National Happiness

(D) Net National Product

Create a lab report determining how the variables in an electric circuit are related by Ohm's law 

Find a topology with the following characteristics.

i. The sequence (1/n) converges to 0.

ii. The sequence (1/n) does not converge to any point.

iii. The sequence (1/n) converges to the number 1 only.

iv. The sequence (1/n) converges to every real number.

You have to prepare a pH 5.00 buffer, and you have the following 0.10 M solutions available: HCOOH, HCOONa, CH₃COOH, CH₃COONa, HCN, and NaCN. Which solutions would you use? How many milliliters of each solution would you use to make approximately 1 L of the buffer?

You have to prepare a pH 5.05 buffer, and you have the following0.10M solutions available: HCOOH, HCOONa, CH3COOH,CH3COONa, HCN, and NaCN

Part B

How many milliliters of each solution would you use to makeapproximately a liter of the buffer?

Need Help! I am keep getting wrong answer for part B.

You have to prepare a pH 3.50 buffer, and you have the following 0.10 M solutions available: HCOOH, CH₃COOH, H₃PO₄, HCOONa, CH₃COONa, and NaH₂PO₄. Which solutions would you use? How many milliliters of each solution would you use to make approximately 1 L of the buffer?

You have to prepare a pH 5.00 buffer, and you have the following 0.10 M solutions available: HCOOH, HCOONa, CH3COOH, CH3COONa, HCN, NaCN.

1. Which solution should I use?
2. How many milliliters of each solution would you use to make approximately a liter of the buffer?