Consider a simplified program, where we can ONLY draw circles and rectangles on the canvas (no need to consider other shapes). Choose one of these languages: C++/C#/Java, and write down some pseudo-codes (i.e. doesn’t need to be grammatically accurate) for the following questions.
1. Define two classes for a Circle and a Rectangle. For both classes, we would also like to know where the center of the circle/rectangle is, and be able to get the area of the circle/rectangle.
2. Obviously, these two classes share some common "characteristics". Define a "Shape" class that encapsulates these common characteristics. What is the name of the relationship between the Rectangle/Circle class and Shape class, and what do you need to change about your codes in Q1? Also, why do we want/need the "Shape" class at all?
3. Should you be able to draw an "unspecified" Shape on the canvas? Or does it have to be a rectangular or circle? What does this mean about the Shape class? Hint: I’m looking for the word "abstract" in your answer.
4. Also note that, the Shapes above all have colors, fills, shades, outlines, etc. To simplify it, let’s combine all of these aesthetic elements of the Shape into one thing, and call it the "Style" of the Shape. If we want to include these information, what changes would you need to make to your previous codes?
5. Should Style be its own class? (Hint: yes). What is the relationship between Shape and Style in your code/design? Hint: your answer should be one or more of the following: association, aggregation, composition, inheritance.
6. Now, the user wants to draw something on the canvas. There are many ways to do this, but let’s follow this method: there is a Canvas class, with a "draw" function. The user decides upon the shape first, then clicks on the canvas, and the "draw" function is called, and the shape shows up on the canvas. Write the sketch codes for the Canvas class and the "draw" function in this scenario.
7. What’s the relationship between Canvas and Shape: association, aggregation, composition, inheritance? Compare this relationship to the relationship between Shape and Style, what are the differences, if there are any? Explain what would happen to the Shape instances on a Canvas instance, when you delete a Canvas instance?What would happen to the "Style instances" when you delete a Shape instance? (20pts)

The correct answer is b. 34 Ac. The full-load current of a 25-horsepower, 480-volt, 3-phase, squirrel cage induction motor,

The term "induction motor" refers to a motor that operates on the electromagnetic induction principle. When an electrical conductor is put in a rotating magnetic field, a process known as electromagnetic induction occurs in which the electromotive force is induced across the conductor. Slip, or the discrepancy between the rotational speed of the shaft and the magnetic field speed of the motor, is a result of the asynchronous nature of induction motors and enables higher torque. The rotor induces current while the motor is powered at the stator, thus the term "induction" motor.

To learn more about  induction motor click the link below:

brainly.com/question/28852537

#SPJ4

water flowing via the condenser, turbine, and boiler.

The Kelvin-Planck Statement states that it is impossible to build a machine that runs on a cycle and generates work just by transferring heat from a single body.

A heat engine is a device used in engineering and thermodynamics that transforms heat into mechanical energy that may be utilized to do mechanical labor.It accomplishes this by lowering the temperature of a functioning substance from one that is higher.

To know more about nuclear reactor visit:

https://brainly.com/question/13869748

#SPJ4

This question is related to MySQL query and what results it can give.

MySQL provides information on the number of rows returned and the query's execution time, which helps you get a general sense of the server's performance.

Because they reflect wall clock time rather than CPU or machine time and are influenced by things like server load and network latency, these figures are not exact.

Based on Structured Query Language, MySQL is an open source relational database management system (RDBMS) sponsored by Oracle (SQL).Almost every platform, including Linux, UNIX, and Windows, supports MySQL.

Any command used to get data from a table in MySQL is known as a query. Querying, filtering, sorting, joining tables, grouping data, and editing data are all possible with MySQL.

To know more about MySQL visit:

https://brainly.com/question/13267082

#SPJ4

The correct answer is both are correct  technician a says the vat contains a carbon pile that is a variable resistor. technician b says the vat is used to check batteries, starting systems, and charging systems.

A resistor is an electrical component that controls or restricts how much electrical current may pass across a circuit in an electronic device. A specified voltage can be supplied via resistors to an active device like a transistor. Modern resistors are often constructed from a carbon, metal, or metal-oxide layer. In these resistors, an insulating material is wrapped in a helix around a thin film of conductive (but still resistant) material.A passive electrical component called a resistor prevents the flow of electric current by introducing resistance. They are present in practically all electrical networks and electronic circuits. Ohms () are used to measure resistance.

To learn more about resistor click the link below:

brainly.com/question/24297401

#SPJ4

Answer:

If 60% of the encryption operations can be performed in parallel in the original program, then adding a second unit would provide a speedup of 20 on the encryption operation portion that can be parallelized. This is because the second unit allows for the parallel execution of the encryption operations, resulting in a reduction of the execution time.

On the other hand, if the parallelization is limited to the number of encryption units, providing four encryption units would provide a speedup of 10 on the operation portion that cannot be parallelized. This is because the addition of two more units would not increase the parallelization of the encryption operations that are not parallelizable.

Therefore, if the goal is to speed up the encryption operation as much as possible, adding a second unit to support parallel encryption operations would be more useful as it would provide a speedup of 20 on the encryption operation portion that can be parallelized.

The addition of a second unit to facilitate parallel encryption operations would be more beneficial if the goal is to accelerate the encryption process.

If 60% of the encryption processes in the original program can be carried out in parallel, adding a second unit would result in a speedup of 20 for that portion of the encryption procedures that can be parallelized.

This is so that the execution time can be decreased by doing the encryption procedures in parallel using the second unit.

The provision of four encryption units would result in a 10x speedup on the operation portion that cannot be parallelized, however, assuming the number of encryption units is the only constraint on parallelization.

This is so that the parallelization of the encryption processes that cannot be parallelized would not be increased by the addition of two more units.

Therefore, if the intention is to speed up the encryption process, adding a second unit to enable parallel encryption operations would be more advantageous.

To learn more about encryption units, visit here:

https://brainly.com/question/17017885

#SPJ2

Inversely proportional to the square of the distance from the source, the strength of an electric field produced by source charge Q. As an inverse square law, this applies.

The magnitude of an electric field depends on the location it is present, and it gets less the further it is from the source. When measured in coulombs (C), the electric charge of the source item, the electric field strength at a given vector point is exactly proportional to this charge. The field intensity also depends on the separation between the source object and the test charge vector point, which is inversely proportional. A positive charge's size is inversely proportional to the number of field lines leaving it or entering it. According to how close you are, the field has more power.

To know more about vector

https://brainly.com/question/3405075

#SPJ4

Post and beam framing is a method in which horizontal or sloping beams and vertical posts form the building's fundamental frame.

• Framing is the process of connecting materials used in construction. erect a framework. A system for construction is framing. The terms "studs," "plates," "headers," "rafters," "girders," "flooring," and "joists" are all used to describe various components that make up "framing."

There are basically three types of modern wood framing: framing with a balloon, platform, and semi-balloon. Vertical load-bearing framing studs run continuously from the foundation to the roof with long lumber lengths.

To know more about beam framing visit :-

https://brainly.com/question/30225020?

#SPJ4

Choose the travel lane that has the least amount of traffic and stay in it until you need to turn, pass another vehicle, or avoid a hazard.

an engine-powered vehicle that is often on wheels and used to transport people or objects, especially on land: This night, a truck driver perished when his vehicle overturned. Examples of road vehicles include cars, buses, and trucks. Among farm vehicles are tractors.

You can go wherever you must travel for work if you have a car. If you need to make a quick grocery run, you don't need to worry about the weather slowing down public transportation. Using a car allows you to complete several daily duties. If your schedule is busy

To know more about vehicle visit:

https://brainly.com/question/29491014

#SPJ4

Operators should avoid recycling filter backwash water during periods of high intake water turbidity because concrete may result in concrete cryptosporidium oocysts in the filter media.

Backwashing a drinking water system filter signifies the concept of reversing and increasing the water's flow to flush out accumulated debris and particles. Filter backwash is not only crucial to the life of a filter, but it is also elemental to the quality of water coming out of the filter.

Since filter backwash is integral to the operation of a rapid-rate filter, properly operated backwash processes can substantially reduce the risk of disease-causing organisms, such as pathogens, passing through the filter and entering the distribution. On the other hand, improper recycling of filter backwash water can result in cryptosporidium oocysts.

You can learn more about filter backwash water  at

https://brainly.com/question/14492356

#SPJ4

I recommend deploying an on-premise private cloud using a software-defined infrastructure solution such as OpenStack.

OpenStack is an open-source platform that provides a flexible and scalable cloud infrastructure for managing compute, storage, and networking resources. It has a large community of developers and users, which ensures regular updates and support.

To ensure scalability, I suggest using a highly available architecture, with multiple redundant controllers and compute nodes. This ensures that if one node fails, there are backups available to take over and maintain service availability. Additionally, the use of load balancers and auto-scaling mechanisms can ensure that resources are automatically added or removed based on usage, further improving scalability.

To ensure reliability, I recommend implementing a comprehensive monitoring and management system that includes real-time monitoring of resources, automatic alerts, and a centralized log management system. This allows for quick identification and resolution of any issues that may arise. Additionally, regular backups and disaster recovery procedures should be in place to ensure that data is protected and can be restored in case of an emergency.

Learn more about installation on:

https://brainly.com/question/11430725

#SPJ1

The number of transfer units is 1 if the height of packing in the tower is 3 meters, with a feed flow rate of 15 liters per hour.

To calculate the number of transfer units (NTU), we use the formula:

NTU = (H * A) / (F * Cp)

Where H is the height of the packing in the tower, A is the overall mass transfer coefficient, F is the flow rate of the feed, and Cp is the specific heat capacity of the fluid.

In this case, we know that H = 3 meters, A = 5 square meters per hour, F = 15 liters per hour, and we assume that Cp is constant, so we can use the value of Cp of the fluid.

NTU = (3 * 5) / (15 * Cp)

NTU = 1

It's important to note that the number of transfer units (NTU) is a dimensionless parameter that is used to describe the performance of heat exchangers, evaporators, and other mass transfer equipment. It describes the relationship between the heat and mass transfer rates and the physical properties of the fluids involved.

For more questions like Tower height click the link below:

https://brainly.com/question/14636106

#SPJ4

The economic characteristics of the segments are comparable, and the majority of the qualitative aggregation criteria outlined in ASC 280 are shared by the segments.

If aggregation is consistent with the core principle of this IFRS, the segments have similar economic characteristics, and the segments are similar in each of the following respects, then two or more operating segments may be combined into a single operating segment: a. The characteristics of the goods and services

The guidance allows for the aggregation of two or more operating segments if they share similar economic characteristics and other operating similarities once the reporting entity's operating segments have been identified.

To know more about economic characteristics visit :-

https://brainly.com/question/20353892

#SPJ4

There are 3 types of void in hydrated cement which are Interlayer space, Capillary Void and Air Void.

Concrete castings' surfaces may develop small holes or cavities known as "concrete voids." "Bug holes" and "fish eyes" are other names for surface voids. These voids could cause the completed casting's surface to have an unfavorable look. Surface gaps can be caused by three factors: release agents, water, or air.

Types of voids in Cement :

To learn more about Voids refer to  :

https://brainly.com/question/14853465

#SPJ1

The elastic rebound concept states that the energy produced when highly strained rock fractures and suddenly shifts is what causes earthquakes.

The correct option is A.

The relationship between the forces that are applied to an item and the consequent deformations is discussed in the theory of elasticity. In reality, analyzing a material's elastic behavior's boils down to figuring out the elastic constants that correlate to simple deformations.

The elastically distorted rocks all along fault rebound back to their former shape as much as they can after an earthquake.

To know more about elastic rebound theory visit:

https://brainly.com/question/3157947

#SPJ4

The Adelie species' average body weight is 3706.164 g.

code originally used:

penguins%>%

drop na()%>%

group by(species)%>%

You may determine the mean value for the variable body mass g using the code snippet summarize(mean(body mass g)). The right number is

drop na() and summarize (mean(body mass g)) in penguins.

Summary statistics are shown using the summarize () function. To obtain specific statistics, we can combine the summarize() method with other functions like mean(), max(), and min(). In this instance, you compute the mean value for body mass using the mean() function.

The average body weight of the Adelie species is therefore 3706.164 g.

To know more about functions visit:-

https://brainly.com/question/29993939

#SPJ4

Children begin to acquire fine motor skills at the age of three. They are better able to move their fingers on their own and use them for increasingly difficult tasks including holding writing instruments like an adult, using scissors, and creating intricate and detailed drawings.

Children as young as three can successfully perform the fine motor skill of drawing a circle. A five-year-old child's fine motor skills include tying shoelaces, cutting with scissors or a pencil extremely precisely, and drawing a human with several pieces. At this age, kids begin learning about numbers and counting. Speak to your youngster in lengthier than his own phrases that contain actual words to aid in the development of his language abilities. When he says something, repeat it, for instance, "need nana," and then demonstrate how to use more "grown-up" language by saying, "I need nana."

To learn more about demonstration please check:

https://brainly.com/question/25184007

#SPJ4

The best design in bookstore would be to create the class Published Material and have Book, Movie, and Audio Tape inherit from it all the listed fields.

What is bookstore?
Bookstore is a place where books are sold and bought. It has a wide variety of books ranging from novels to textbooks. It also provides other services such as book reviews, book signings, and book club meetings. Bookstores also provide a friendly and inviting atmosphere for customers, making it an enjoyable experience for everyone. They also provide a great way for readers to discover new books and authors. Most bookstores also carry magazines, stationary, gifts, and other merchandise related to books. With the rise of online bookstores, customers can now purchase books from the comfort of their home. Bookstores are great places to purchase books, but they are also wonderful places to socialize, learn, and relax.

To learn more about bookstore
https://brainly.com/question/13974345

#SPJ4

Given the fact that velocity is always tangential to the path of motion, displacement is y = x2 -x + 3.

A particle appears to move tangentially to the circular path at a point along a path that is circular. As a result, the particle's velocity vector is always at a point along the tangent.

Motion of a projectile in physics-vectors The horizontal and vertical velocities of a projectile are the two parts of motion that determine its path. The typical curved path that a projectile takes is the result of the combination of these two components, which operate completely independently of one another.

To know more about path of motion visit :-

https://brainly.com/question/11261462

#SPJ4

The correlation coefficient for the sample in this problem is given as follows:

r = 0.9556.

The coefficient is obtained inserting the points in a data-set in a correlation coefficient calculator.

The points for this problem are given as follows:

(3,8), (7,12), (5, 13), (9, 10), (11, 17), (13, 23), (19, 39), (21,38).

Inserting these points into a calculator, the correlation coefficient is given as follows:

r = 0.9556.

More can be learned about correlation coefficients at brainly.com/question/16355498

#SPJ1

The structural behaviour of steel "tree-like columns," or columns with branches, has not been the subject of many studies.

Choose New to add a new tree to your project. The Add Plants dialogue box for Land F/X will now appear. The Genus of the tree you want to add is located by scrolling. To choose a genus, click it.

An Effective Plant Catalogue

Comprehensive Plant Catalogue in SketchUp. The kinds of plants that landscape architects and designers use every day... in the real world... are available in a sizable and expanding selection on SUPlants. View our selection of plants below, then visit the complete plant catalogue.

A binary decision tree with linear regression functions at the terminal (leaf) nodes, the M5 model tree is a decision tree learner for regression task used to predict values of the numerical response variable Y [13]. It can predict continuous numerical attributes.

To learn more about concrete refers to:

https://brainly.com/question/28903866

#SPJ4

Alumina's strong chemical bonds are the cause of a number of its properties, including its low thermal and electric conductivity and high melting temperature, which makes casting alumina into shapes nearly difficult.

Al is the chemical symbol for aluminium, an element with the atomic number 13 in nature. Al2O3 is the chemical formula for the substance alumina. As a result, the primary distinction between aluminium and alumina is that the former is a chemical element and the latter is a compound that contains aluminium. Pure aluminium lacks significant tensile strength. However, alloying components like manganese, silicon, copper, and magnesium can be used to generate an alloy with qualities that are specifically suited for a certain purpose while also enhancing the strength of aluminium.

To learn more about alumina click the link below:

brainly.com/question/29340642

#SPJ4

The tension in the rope is 4.59 N. The box's kinetic friction coefficient with the floor is 0.23.

Problem 1: To calculate the tension in the rope, we need to calculate the weight of the ball,

which can be done using the formula F = mg,

where F is the force (weight) of the ball, m is the mass of the ball, and g is the acceleration due to gravity (9.81 m/s^2).

Therefore,

the weight of the ball is 0.470 kg * 9.81 m/s^2 = 4.59 N.

Since the tension in the rope is equal to the weight of the ball, the tension in the rope is 4.59 N.

Since the post is frictionless, the pole exerts no force on the ball.

Problem 2: To calculate the coefficient of kinetic friction,

we need to use the formula μk = Ff/Fn,

where "μk" stands for "kinetic friction coefficient,"

  Ff is the frictional force, and Fn is the normal force.

Since the push force has a horizontal component of 20 N and a vertical component of 25 N downward,

the normal force is 25 N.

Since the box is slowing at a constant rate of 0.90 m/s each second,

The frictional force can be found using the formula Ff = ma

The box's kinetic friction coefficient with the floor is 0.23.

To learn more about tension and force refer :

https://brainly.com/question/30033702

#SPJ4

Answer:

is the process of using an object-oriented methodology to design a computing system or application

Explanation:

This technique enables the implementation of a software solution based on the concepts of objects.OOD helps in designing the system architecture or layout - usually after completion of an object-oriented analysis (OOA).

Object-oriented design is fundamentally a three step process which are:

1) identifying the classes

2) characterizing them

3) the defining the associated actions

Object designing activities include:

the identification of reuse

Systems without adequate controls and protections for cybersecurity can be impacted by big data.

The type model is one of the easiest and simplest for classifying controls: physical, administrative, or technical, and by function: corrective, detective, and preventative measures.

The Essential Eight mitigation strategies are as follows: application control, application patching, configuring macro settings for Microsoft Office, user application hardening, restricting administrative privileges, operating system patching, multi-factor authentication, and regular backups are some of the other features. Controls on access. Your business is able to reduce the potential dangers associated with data exposure by restricting access to sensitive data or systems.

To know more about cybersecurity visit :-

https://brainly.com/question/27560386

#SPJ4

The crew must contact the Trackside Helpdesk and follow their instructions. They must also travel under current authorisation while not going faster than 30 MPH.

The correct option is both (b) and (c)

A dispatcher is a specialist who makes sure everything goes according to plan by coordinating with clients, giving drivers detailed route instructions, and scheduling delivery times. Drivers may reach dispatchers for all the information they need to make deliveries, and they serve as their point of contact.

A 120-hour training programme is required for police dispatchers. The 14 domains it covers are Missing persons, domestic abuse, critical incidents, inter-personal communication, including wellness management are a few of them.

To know more about dispatcher visit:

https://brainly.com/question/30195247

#SPJ4

I understand that the question you are looking for is:

Train 111 travels over a detector but does not receive a message. The crew requests a repeat of the detector message using 001# on the radio, but a retransmission is not provided. What actions must the crew take?

a. proceed to the next detector and be governed by it

b. proceed on existing authority not to exceed 30MPH and immediately notify dispatcher

c. Contact the Wayside Helpdesk and comply with their instruction

D. both (b) and (c)

The capacity of the pump is 7.82 gallons per minute (GPM).

To determine the capacity of the pump, we can use the formula:

Q = (n * Vd * VE) / 231

Where Q is the flow rate, n is the number of strokes per minute, Vd is the volume displaced per stroke, VE is the volumetric efficiency, and 231 is a conversion factor from cubic inches to gallons.

We know that:

n = 170 strokes/minute

VE = 0.89

To calculate the volume displaced per stroke, we can use the formula:

Vd = π/4 * D^2 * S

Where D is the diameter of the cylinder and S is the stroke length.

So we have

D = 6 inches

S = 14 inches

Vd = (π/4) * (6 inches)^2 * 14 inches = 301.57 inches^3

Now we can substitute these values into the first formula

Q = (170 * 301.57 * 0.89) / 231 = 7.82 GPM

For more questions like GPM click the link below:

https://brainly.com/question/14366850

#SPJ4

Correctly written question

If you have a duplex single-acting reciprocating pump making 170 stroke/minute, with a 6" diameter cylinder, a 14" troke, and operating with 89% volumetric efficiency, what is the capacity of this pump?

The correct answer is B.Investigate the drive right away by browsing it on the suspect's computer, just in case there are time files .

The following stages may be included in many (or all) inquiry efforts: Data collection, digital search, and . Examining involves using methods to locate and retrieve data. Utilizing resources and data for analysis to support a claim. In order to establish facts and offer correct and in court or other proceedings, an investigation procedure known as "computer " is used. Any system that you believe has been or is somehow connected to an event should have its data collected. It can also provide you with enough details to decide if a subset needs a thorough analysis.

To learn more about Investigate click the link below:

brainly.com/question/29365121

#SPJ4

Answer:

The right answer is 400 kj.

The correct answer is 400 kj  a heat engine with a thermal efficiency of 50% produces 200 kj of net work output. determine the heat input.

Calculate the thermal efficiency of a heat engine that operates between 2270°C and 270°C. A heat engine can never achieve 100% thermal efficiency. Efficiency: W=QHQC=(1TCTH)QH. W=QH=1TCTH. The efficiency of a Carnot engine with a hot reservoir of boiling water and a cold reservoir of freezing cold water, for instance, will be 1(273/373)=0.27, or little over 25% of the heat energy is converted into usable work. Of course, these temperatures are in degrees Kelvin. If all of the heat is transformed into usable work or mechanical energy, a heat engine is said to be 100% efficient. Heat engines' efficiency can never be 100% since some heat energy cannot be converted into mechanical energy.

To learn more about thermal efficiency click the link below:

brainly.com/question/13039990

#SPJ4

The last step in a central-fan heating control sequence is when the air temperature within the heat exchanger reaches the setpoint of an internal controller, the blower motor is energized.

Knowing how a gas furnace works in sequence will help you avoid wasting time and money on unnecessary service calls. We frequently observe that technicians need to order various parts to fix a gas furnace. Was it truly the case that the gas valve, control board, ignitor, and limit switch failed simultaneously? Most likely not. You might chuckle, but we frequently receive requests for these components. Depending on the kind or brand, the order of operations may change.

Every air conditioner uses the same closed-circuit cycle of compression, condensation, expansion, and evaporation. The heat is transferred from one region, cooled, and then released in another area using the same refrigerant.

The last step in a central-fan heating control sequence is when the air temperature within the heat exchanger reaches the setpoint of an internal controller, the blower motor is energized.

To learn more about Central Fan Heating System refer to :

https://brainly.com/question/13315642

#SPJ1

Convection currents drive the movement of the mantle beneath the surface of the earth.

Convection currents can be detected in the Earth's mantle. A convection circulation is created when warm mantle material rises deep in the mantle while cooler mantle material descends. This kind of circulation is thought to cause movement in the Earth's crustal plates.

The double-layered and single-layered models are the two most common types of mantle convection. The "mantle transition zone," a discontinuity located around 670 kilometers beneath the surface of the Earth, has a different focus in each model.

To know more about Convection currents visit:

https://brainly.com/question/29763773

#SPJ4