***ECONOMICS***


Person A earns $100,000 per year, while person B earns $45,000 per year.

Which conclusion is most likely true for these people when they pay their

income taxes?


A. Both person A and person B will pay at the same income tax rate.


B. Person B will pay at a higher income tax rate than person A.


C. Person A will pay at a higher income tax rate than person B.


D. Neither person A nor person B will have to pay income tax.

Answer:

6:00 pm the next day

Explanation:

Given that

Tahir traveled twice as far as Ahmed. We say,

Ahmed traveled a distance, D

Tahir would travel a distan, 2D

Tahir traveled 1/3 as fast as Ahmed, so we say

Ahmed traveled at a speed, S

Tahir would travel at a speed, S/3

If Ahmed starts travel on tuesday at noon at point x to point z 300km, by 9:00pm,

Time taken by Ahmed to travel is

9:00 pm - 12:00 pm = 9 hours

Ahmed, traveled 300 km in 9 hours, meaning he traveled at 33.3 km in an hour.

Speed, S that Ahmed traveled with is 33.3 km/h

Remember, we stated that Tahir travels at a speed of S/3, that is, The speed of Tahir is

33.3/3 = 11.1 km/h.

300 km would then be traveled in 300 km/11.1 km/h = 27 hours.

Tahir started traveling, 3 hours after Ahmed, that is 12:00 pm + 3:00 hrs = 3:00 pm, and if he's to spend 27 hours on the journey he would reach destination z at 6:00 pm the next day

Answer:

Lack of fluid oil – lack of fluid oil in your vehicle, or a fluid leakage, can lead to heavy steering. If there is a lack of fluid oil, or a leak, this can reduce the pressure in the system, meaning the steering wheel does not receive enough supply of fluid to perform freely.

As the temperature of the material increases, the potential energy of the molecules increases. Thermal expansion occurs due to changes in temperature, and interatomic distances increase as potential energy increases.

Thermal expansion is used in a variety of applications such as rail buckling, engine coolant, mercury thermometers, joint expansion, and others.

It is to be noted that an application of the concept of liquid expansion in everyday life concerns liquid thermometers. As the heat rises, the mercury or alcohol in the thermometer tube moves in only one direction. As the heat decreases, the liquid moves back smoothly.

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A short MATLAB program to plot the variations of complex function F(s) in the complex plane (Hint: Plot the imaginary part of F(s) versus its real part as s varies from - 100j to 100j.)

The MATLAB program is as follows:

This MATLAB program plots the imaginary part of F(s) versus its real part as s varies from - 100j to 100j in the complex plane.

To answer the question, we will consider a complex function F(s) = 1 of a complex variable s.

(a) Assume s = -0 + jw where o and w are real numbers. To obtain the magnitude and phase of F(s) in terms of o and w, we can use the following formula: F(s) = |F(s)|·ej·φ where |F(s)| is the magnitude and φ is the phase angle. In this case, |F(s)| = 1 and φ = 0. Therefore, the magnitude of F(s) is 1 and the phase is 0.

(b) Now set o = 0, so that s = jw. To obtain the real and imaginary parts of F(s) in terms of w, we can use the following formula: F(s) = FR + j·FI where FR is the real part and FI is the imaginary part. In this case, FR = 1 and FI = 0. Therefore, the real part of F(s) is 1 and the imaginary part is 0.

(c) We want to see how F(s) varies as s = jw varies between – 100j and 100j.

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The first case where the power of synthesis was applied was in Chile, where they had to put 100 families in houses around 40 m². The second case where the power of synthesis used to solve a design problem is when they were making a building.

The power of synthesis is based on the belief that, while each individual insight, function adds value.

When we work together to inform and inspire the company's priorities, our value grows exponentially.

Thus, the first case where the power of synthesis was applied was in Chile, where they had to put 100 families in houses around 40 m². The second case where the power of synthesis used to solve a design problem is when they were making a building.

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Yes, a certified powerplant mechanic can perform and return to service an engine after a major repair is made.

Certified powerplant mechanics are trained and authorized to perform maintenance and repairs on aircraft engines. They possess the necessary knowledge, skills, and certifications to ensure the engine is repaired properly and meets all safety requirements. Once the major repair is completed, the mechanic will conduct necessary inspections, functional checks, and any required testing to verify that the engine is in proper working order. If everything meets the standards and regulations, the mechanic can then return the engine to service.

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By 2020, 50 billion devices are expected to be connected to the internet worldwide. Option a is correct.

The Internet of Things (IoT) is a concept that refers to the connection of everyday items to the internet and to one another. It is a vast system of devices, computers, and other items with built-in sensors that collect and share data with one another.

These sensors communicate with one another, exchanging data with one another and with us, to create new digital experiences. In simpler words, IoT is a network of connected devices that communicate with one another to perform everyday tasks.

The goal of IoT is to make everyday items more intelligent by connecting them to the internet and allowing them to share data. It is anticipated that by 2020, 50 billion devices will be connected to the internet worldwide.

Therefore, a is correct.

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Answer:

you are so smart

Explanation:

i have 8 cARS

Here's a class diagram that represents the entities and their relationships for the video store scenario described:

+---------------------+        +---------------+       +-----------------+

|      Movie          |        |    Member     |       |    Rental       |

+---------------------+        +---------------+       +-----------------+

|  movie_id : int     |        |   member_id : |       | rental_id : int |

|  title : string     |        |   int        |<-------| movie : Movie    |

|  format : string    |        |   name : str |        | member : Member |

|  category : string  |        |   phone : str|        | rental_date : dt|

+---------------------+        |   type : str |        | is_returned : bool |

                               +---------------+        +-----------------+

                               |  credit_card: |                

                               +---------------+                

                               | rent_movies() |                

                               +---------------+                

                                         ^                      

                                         |                      

                               +---------------+                

                               | GoldenMember  |                

                               +---------------+                

                               | rent_limit:   |                

                               +---------------+                

                               | return_movies()|                

                               +---------------+                

                                         ^                      

                                         |                      

                               +---------------+                

                               | BronzeMember |                

                               +---------------+                

                               | rent_limit:   |                

                               +---------------+                

                               | return_movie()|                

                               +---------------+                

The Movie class has attributes movie_id, title, format and category. Each Member has a member_id, name, phone, and type. The Rental class is the association class that connects Movie and Member through the movie and member attributes, respectively, and adds rental_id, rental_date, and is_returned attributes.

There are two sub-classes of Member: GoldenMember and BronzeMember. The GoldenMember has an additional credit_card attribute and a rent_limit method that allows them to rent multiple movies at once. The BronzeMember has a rent_limit method that allows them to rent only one movie at a time. Both sub-classes have a return_movie or return_movies method, respectively, to allow them to return the rented movies.

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Absolute purchasing power parity (PPP) should hold more closely for items that are easily tradable and have low transportation costs.

Absolute purchasing power parity is an economic theory that states that the exchange rate between two currencies should equal the ratio of their price levels. Or we can say that the cost of a basket of goods in one country ough be the same as the cost of the same basket of goods in another country, after adjusting for the exchange rate. Anyhow, absolute PPP is not always true due to various factors such as trade barriers, transportation costs, and non-tradable goods. Items are easily tradable and have low transportation costs are more likely to follow absolute PPP closely.Some of easily tradable items include commodities like oil, metals, and agricultural products, as well as standardized manufactured goods.

The low transportation costs associated with the  items make it easier for opportunities to com, ase up as  individuals or businesses can buy goods in one country where they are relatively cheaper and sell them in another country where they are  more expensive. This process is helpful in  equalizing prices in different markets and makes them closer to absolute PPP. In conclusion, absolute purchasing power parity tends to hold more closely for easily tradable items with low transportation costs.

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Before installing head gaskets, you should look for "this side up" or "front" labels on the head gaskets.

A head gasket can be defined as a gasket which is fitted between the engine block and the cylinder head in an internal combustion engine, so as to seal oil passages and absorb the pressures of the combustion that occurs inside the engine.

As a general rule, you should look for "this side up" or "front" labels on the head gaskets before installing head gaskets in an internal combustion engine of a vehicle.

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Answer: Photo lines

Explanation: made more sense

To calculate the total wellbore storage coefficient and the dimensionless wellbore storage coefficient,  it is necessary to obtain more details about the compressibility of the fluid and the fluctuations in fluid level observed during the drawdown experiment.

The wellbore's storage coefficient reflects the variation in fluid quantity resulting from a unit of pressure change in the same area. The subsequent equation can be utilized to compute it:

Wellbore Storage Coefficient (C) = (Change in Fluid Volume) / (Change in Pressure)

To estimate the wellbore storage coefficient without having the specific values of the oil formation volume factor (Bo) for a particular reservoir, we divide the wellbore storage coefficient by Bo.

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This question is incomplete, the complete question is;

Given the complex numbers A₁ = 6∠30 and A₂ = 4 + j5;

(a) convert A₁ to rectangular form

(b) convert A₂ to polar and exponential form

(c) calculate A₃ = (A₁ + A₂), giving your answer in polar form

(d) calculate A₄ = A₁A₂, giving your answer in rectangular form

(e) calculate A₅ = A₁/(\(A^{*}\)₂), giving your answer in exponential form.

Answer:

a) A₁ in rectangular form is 5.196 + j3

b) value of A₃  in polar form is 12.19∠41.02°

The polar form of A₂ is 6.403 ∠51.34°, exponential form of A₂ = 6.403\(e^{j51.34 }\)

c) value of A₃  in polar form is 12.19∠41.02°

d) A₄ in rectangular form is 5.784 + j37.98

e) A₅ in exponential form is 0.937\(e^{j81.34 }\)

Explanation:

Given data in the question;

a) A₁ = 6∠30

we convert A₁ to rectangular form

so

A₁ = 6(cos30° + jsin30°)

= 6cos30° + j6cos30°

= (6 × 0.866) + ( j × 6 × 0.5)

A₁  =  5.196 + j3

Therefore, A₁ in rectangular form is 5.196 + j3

b) A₂ = 4 + j5

we convert to polar and exponential form;

first we convert to polar form

A₂ = √((4)² + (5)²) ∠tan⁻¹( \(\frac{5}{4}\) )

= √(16 + 25) ∠tan⁻¹( 1.25 )

= √41 ∠ 51.34°

A₂ = 6.403 ∠51.34°

The polar form of A₂ is 6.403 ∠51.34°

next we convert to exponential form;

A∠β can be written as A\(e^{j\beta }\)

so, A₂  in exponential form will be;

A₂ = 6.403\(e^{j51.34 }\)

exponential form of A₂ = 6.403\(e^{j51.34 }\)

c) A₃ = (A₁ + A₂)

giving your answer in polar form

so, A₁ = 6∠30 = 5.196 + j3 and A₂ = 4 + j5

we substitute

A₃ = (5.196 + j3) + ( 4 + j5)

= 9.196 + J8

next we convert to polar

A₃ = √((9.196)² + (8)²) ∠tan⁻¹( \(\frac{8 }{9.196}\) )

A₃ = √(84.566416 + 64) ∠tan⁻¹( 0.8699)

A₃ = √148.566416 ∠41.02°    

A₃ = 12.19∠41.02°

Therefore, value of A₃  in polar form is 12.19∠41.02°

d) A₄ = A₁A₂

giving your answer in rectangular form

we substitute

A₄ = (5.196 + j3) ( 4 + j5)

= 5.196( 4 + j5) + j3( 4 + j5)

= 20.784 + j25.98 + j12 - 15

A₄ = 5.784 + j37.98

Therefore, A₄ in rectangular form is 5.784 + j37.98

e) A₅ = A₁/(\(A^{*}\)₂)

giving your answer in exponential form

we know that \(A^{*}\)₂ is the complex  conjugate of A₂

so

\(A^{*}\)₂ = (6.403 ∠51.34° )*

= 6.403 ∠-51.34°

we convert to exponential form

A∠β can be written as A\(e^{j\beta }\)

\(A^{*}\)₂  = 6.403\(e^{-j51.34 }\)

also

A₁ = 6∠30

we convert to polar form

A₁ = 6\(e^{j30 }\)

so A₅ = A₁/(\(A^{*}\)₂)

A₅ = 6\(e^{j30 }\) / 6.403\(e^{-j51.34 }\)

A₅  = (6/6.403) \(e^{j(30+51.34) }\)

A₅  = 0.937\(e^{j81.34 }\)

Therefore A₅ in exponential form is 0.937\(e^{j81.34 }\)

Note that the isentropic efficiency of the compressor is 0.68 and the entropy generation rate in the compressor is 0.119 kW/K.

We can use the following thermodynamic relations to solve this problem:

h2s = h1 + (s2s - s1) (isentropic process)

h2 = h1 + (q - w) (actual process)

ηisentropic = (h2s - h1) / (h2 - h1) = (T2s - T1) / (T2 - T1)

where h is the enthalpy, s is the entropy, q is the heat added, w is the work done, and ηisentropic is the isentropic efficiency.

To calculate the entropy generation rate (Sgen) in the compressor, we can use the following relation:

Sgen = q/Tc - q/Th

where Tc is the average surface temperature of the compressor and Th is the temperature of the compressed fluid at the compressor outlet.

Given:

P1 = 140 kPa

T1 = -10°C = 263.15 K

P2 = 1200 kPa

T2 = 50°C = 323.15 K

W = 150 kW

Qloss = 40 kW

Tc = 20°C = 293.15 K

Using the refrigerant tables, we can determine the enthalpies and entropies at the compressor inlet and outlet:

At the compressor inlet:

h1 = 187.67 kJ/kg

s1 = 0.9396 kJ/kg·K

At the compressor outlet:

h2 = 307.23 kJ/kg

s2 = 1.1058 kJ/kg·K

To calculate h2s, we assume an isentropic process, so s2s = s1 and P2s = P1. Using the refrigerant tables, we find:

h2s = 259.62 kJ/kg

a) The isentropic efficiency can be calculated as:

ηisentropic = (h2s - h1) / (h2 - h1) = (259.62 - 187.67) / (307.23 - 187.67) = 0.661 or 66.1%

b) The heat added to the compressor can be calculated as:

q = W + Qloss = 150 + 40 = 190 kW

The temperature at the compressor outlet can be determined from the refrigerant tables at P2 = 1200 kPa:

h2f = 210.13 kJ/kg

The final temperature can be calculated as:

T2f = T1 + (h2f - h1) / cp = 59.43°C

The entropy generation rate can be calculated as:

Sgen = q/Tc - q/Th = q(1/Tc - 1/Th) = 190(1/293.15 - 1/332.58) = 1.57 kW/K

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Answer: c. Centre of pressure​

Explanation:

Pressure is applied on a surface when a force is exerted on a particular point on that surface by another object when the two come into contact with each other.

The point where the pressure is applied is known as the centre of the pressure with the force then spreading out from this point much like an epicentre in an earthquake.

A use case diagram for an online library system would typically have actors such as a librarian, a member, and an administrator.

Some of the use cases in the online library system would include:• Login to library system• Search for books• Borrow book• Return book• Renew book• Pay overdue fine• Reserve a book•

Search for Books Use case scenario with narrative: The member selects the “Search” option from the main menu. The system shows the search screen, where the member enters the book title, author, or keywords to search. The system searches for the entered keywords in the database..

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When the process is in control but does not meet specification, it is referred to as a special cause error.

In statistical process control, a process is considered to be in control when it operates within the defined limits and shows only random variations. However, when a process is in control but does not meet the desired specifications, it indicates the presence of a special cause error.

Special cause errors are attributed to specific factors or events that cause the process to deviate from the expected outcome. These errors are typically unpredictable and require investigation and corrective action to bring the process back within the desired specifications.

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ᴄᴏᴍᴘʟᴇᴛᴇɴᴇꜱꜱ ᴍᴇᴀɴꜱ ᴛʜᴇ ꜱᴛᴀᴛᴇ ᴏꜰ ʙᴇɪɴɢ ᴄᴏᴍᴘʟᴇᴛᴇ ᴀɴᴅ ᴇɴᴛɪʀᴇ; ʜᴀᴠɪɴɢ ᴇᴠᴇʀʏᴛʜɪɴɢ ᴛʜᴀᴛ ɪꜱ ɴᴇᴇᴅᴇᴅ.

ʙᴇᴀᴜᴛʏ ᴍᴇᴀɴꜱ combination of qualities, such as shape, colour, or form, that pleases the aesthetic senses, especially the sight.

An algorithm is a specific set of instructions used to solve a problem. It is precise and unambiguous, and can be understood by a computer.

An algorithm is a step-by-step procedure used to solve a problem. It can be expressed in any language, from ordinary language to a programming language. The goal of an algorithm is to provide an efficient solution to a problem. The steps must be clearly defined and unambiguous, so that a computer can execute them. Furthermore, the algorithm should be designed to minimize the amount of memory and time required to process the data. Algorithms are used in many different areas, from mathematics and engineering to economics and computer science.

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Answer:  So to calculate the flexural strength (σ), multiply the force by the length of the sample, and then multiply this by three. Then multiply the depth of the sample by itself (i.e., square it), multiply the result by the width of the sample and then multiply this by two

Explanation:

Answer:

W18 * 106

Explanation:

Given that the section modulus of the wide flange beam is 200 in^3 the lightest beam possible that can satisfy the section modulus must have a section modulus ≥ 200 in^3. also the value of the section modulus must be approximately closest to 200in^3

From wide flange Beam table ( showing the section modulus )

The beam that can satisfy the condition is W18 × 106  because its section modulus ( s ) = 204 in^3

A data set might follow a variety of non-normal distributions, depending on the nature of the process, the technique of data collection, the sample size, outliers in the data, etc. Below is a list of some of the most significant non-normal distributions; Alpha Distribution Exponential

Several tests, including the t-test, ANOVA, Regression, and DOE, are unaffected by the assumption of normality.

Since no attribute (such as height, weight, etc.) will have a perfectly normal distribution, non-normality is a fact of existence. Using a transformation is one way to make non-normal data resemble regular data.

Therefore, The non-normal data can be analysed in two different ways. Use non-parametric tests, which don't make any assumptions about normality, or convert the data with the right function to make it follow a normal distribution.

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Technician A is correct. Disc brake pads should be replaced when worn to the minimum allowable thickness as stated by the vehicle's manufacturer.

This is to ensure that the brakes are performing safely and efficiently. When there is a brake performance complaint, the pads should still be inspected for any signs of wear and tear. The pads may need to be replaced if they have reached the minimum allowable thickness, but it is important to inspect them to ensure that there is no other underlying cause for the performance complaint. It is important to always adhere to the manufacturer's recommended guidelines for replacing brake pads, as this will ensure that your vehicle's brakes remain safe and efficient. Failing to do so can lead to decreased brake performance, and increased stopping distances, and can even lead to brake failure in some cases.

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Answer:

sheet metal

Explanation:

If the function is called with a single parameter of 50, the resulting iterable will include integers from 0 through 49, inclusive.

In most programming languages, when specifying a range or interval, the starting value is inclusive, while the ending value is exclusive. This means that the range will include all values starting from the initial value and ending one element before the specified end value.

In this case, since the parameter is 50, the function will generate an iterable that includes integers starting from 0 and ending at 49 (inclusive). The number 50 will not be included in the resulting iterable.

It is important to clarify the behavior of the function, especially when dealing with range or interval operations, as the inclusivity or exclusivity of the start and end values can affect the expected output.

By specifying that the range is inclusive for 0 through 49, it ensures that all integers within that range will be included in the resulting iterable, while excluding the value of 50.

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