A window‐mounted air‐conditioning unit (AC) removes energy by heat transfer from a room, and rejects energy by heat transfer to the outside air. At steady‐state, the AC cycle requires 0.434kW and has a coefficient of performance (COP) of 6.22. Determine the rate at which the energy is removed from the room air, in kW. If electricity is valued at $0.10/kw-hr, determine the cost of operating the unit for 24hrs.

Answers

Answer 1

Solution :

Given :

The power of the air‐conditioning (AC) unit is , W = 0.434 kW

The coefficient of performance or the COP of the air‐conditioning (AC) unit is given by  = 6.22

Therefore he heat removed is given by , [tex]$Q_H = 6.22 \times 0.434$[/tex]

                                                                     [tex]$Q_H = 2.7 \ kW $[/tex]

Now if the electricity is valued at  0.10 dollar per kW hour, then the operating cost of the air conditioning unit in 24 hours is given by = 0.10 x 2.7 x 24

                                                                                            = 6.48

Therefore the operating cost = $ 6.48 for 24 hours.


Related Questions

Distinguish and describe the stage of the product development life cycle reflected in the following scenario.

Mindy, a recent transplant to the Midwest from the Southwest, has a great idea for building a corn roaster and taking it to state and county fairs and festivals in Michigan and Minnesota. However, she determines that the cost to grow sweet corn throughout the year would be prohibitively expensive.

Answers

Answer:Very productive

Explanation:

Configuring an Active Directory Domain Controller
1.Why would an administrator want to use the MAP Toolkit?
2.Based on the results of the MAP inventory you performed in the lab, which operating system was installed on the TargetWindows02b server?
3.Based on the results of the MAP inventory you performed in the lab, which desktop and server software was installed on the TargetWindows02b server?
4.Which tasks, other than the ones performed in this exercise, can administrators use the MAP Toolkit to perform?
5.Which utility is used to transform a standalone Windows Server 2012 R2 system into an Active Directory domain controller?
6.What is the importance of SafeModeAdministratorPassword when using PowerShell to install and configure Active Directory?
7.What considerations should you take into account when choosing a domain name?

Answers

Answer:

wat

Explanation:

Implement the following Matlab code:
x=zeros(10,128);
t1=[0:1/128:1-1/128];
z=cos(2*pi*2*t1);
x(1,:)=z;
x=reshape(x,1,1280);
figure(1);
plot(x)
Examine Figure 1 – what does it “look like”? Zoom in. Take the FFT of x and explain what you see.
Manipulate the FFT and perform the IFFT to create a signal which is a continuous (i.e. no interpolating zeroes) sinusoid in the “time” domain. Explain the amplitude of the sinusoid.

Answers

28384 *x soít cos estematema

The amplitude of the sinusoid is 28384 *x soít cos.

What is amplitude?

Amplitude is defined as the greatest deviation from equilibrium of a point on a vibrating body or wave in terms of displacement or distance traveled. In most cases, amplitude is calculated by looking at a wave graph and determining the height of the wave from rest. The strength or intensity of the wave is gauged by its amplitude.

Sinusoid is defined as a signal with sine wave characteristics. In the liver, spleen, and bone marrow, sinusoids and irregular tubules transport blood in place of venules and capillaries. The sine or cosine functions from trigonometry form the foundation of sinusoidal signals, which are periodic functions.

Thus the amplitude of the sinusoid is 28384 *x soít cos.

To learn more about amplitude, refer to the link below:

https://brainly.com/question/8662436

#SPJ2

Consider the following statement concerned with the collection of data, and determine the best selection of terms to complete the statement: "The entire group of objects or peopleabout which information is wanted is called the __________ . Individual members are called _____________. The _________is the part that is actually examined in order to gather information.

a. population, units, sample
b. sample, units, target population
c. response group, respondents, nonresponse group
d. population, dependend variables, subgroup

Answers

Answer:

a. population, units, sample

Explanation:

In a survey or in a research, population is defined as the total number of people or total number of items in the group that we want to study in a research. It is the entire pool from where a sample is drawn.

An unit is defined as the individual members for which the information or data is collected.

A sample is defined is defined as the group or part of the selection from where the information or data is to be obtained.

The overall group of people should be known as the population.

The individual members should be units

And, the sample represents the part that should be examined.

What are population, units, and the sample?

The population refers to the total no of people or items that are required to be studied for the research purpose. In this, the sample should be drawn. The unit refers to the individual members due to which the data should be collected. And, the sample means the portion of the selection from where the data should be collected.

Therefore, the option a is correct.

learn more about population here: https://brainly.com/question/19203964

Joe, a technician, is attempting to connect two hubs to add a new segment to his local network. He uses one of his CAT5 patch cables to connect them; however, he is unable to reach the new network segment from his workstation. He can only connect to it from a workstation within that segment. Which of the following is MOST likely the problem?
A. One of the hubs is defective.
B. The new hub is powered down.
C. The patch cable needs to be a CAT6 patch cable.
D. The technician used a straight-through cable.

Answers

Answer:

Option D. is correct

Explanation:

Joe uses one of his CAT5 patch cables to connect two hubs to add a new segment to his local network. As he can only connect to it from a workstation within that segment,  he is not able to reach the new network segment from his workstation.

The most problem is that the technician used a straight-through cable.

Option D. is correct.

World Without Engines: Explain what todays world without engines would be like? How would it change your life? The world? The way we do things? Please write in paragraph format and include introduction, body, and conclusion. DON'T ANSWER UNLESS YOU HAVE THE ANSWER!!!!!!!!! I WILL MARK BRAINLYEST

Answers

Answer:

the world will not be the same it will change dramticily and

things will not be the same

Explanation:

Which option identifies the type of engineer described in the following scenario?

Sean is an engineer whose current project is a skyscraper in Richmond, VA. He relies heavily on geometry in his research of building design.

Material

Civil

Mechanical

Chemical​

Answers

Answer:

civil

Explanation:

mark be branilist

Answer:

Civil

Explanation:

civil engineering – the application of planning, designing, constructing, maintaining, and operating infrastructure while protecting the public and environmental health, as well as improving existing infrastructure that may

In the context of electronics, the term "ground" is often used to refer to:

1: the negative battery terminal
2:the breadboard
3:the circuit diagram
4:the components
Which one is the answer

Answers

Answer:

1: the negative battery terminal

Explanation:

When we design and develop an electrical circuit in electrical and electronics engineering, it is important that we define a reference point for all electronic signals from which we can measure voltage. Although, the voltage passing through a reference point in an electrical circuit is typically 0 Volts.

Also, a ground is a common return path in an electrical circuit for the current flowing through the circuit.

When working on a direct current (DC) circuit that is mainly operated using a battery, the negative terminal of the battery would be the ground (reference point) for all the components connected to the electrical circuit.

Hence, in the context of electronics, the term "ground" is often used to refer to the negative battery terminal.

What role does the president play in developing the federal budget?
A. The president has control over all discretionary spending in the
budget.
B. The president either vetoes the budget and sends it back to
Congress or signs it into law.
C. The president determines which spending programs will be
mandatory.
D. The president decides whether to approve the House or the Senate
spending bill.

Answers

The role a president plays in developing the federal budget is: B. The president either vetoes the budget and sends it back to Congress or signs it into law.

What is a federal budget?

A federal budget can be defined as a financial plan that is used by the government for the estimation of the revenue and expenditures of a country, especially for a specified period of time, which is often one year.

This ultimately implies that, federal budgets are usually compiled, analyzed and re-evaluated on periodic basis by the executive or federal government of a country.

Generally, the role of a president in developing the federal budget is to either veto the budget and sends it back to Congress or sign it into law.

Read more on budget here: https://brainly.com/question/13964173

Answer:

Explanation:

B. The president either vetoes the budget and sends it back to

Congress or signs it into law.

Single-use earplugs require a professional fitting before they can be used.

Answers

what are you asking? are you asking if it is true or false? sorry :(( i can help you tho!

Many farms and ranches use electric fences to keep animals from getting into or out of specific pastures. When switched on, an electric current is produced in the fence. When an animal touches the electrified fence, it receives a small shock. What material would be the best choice for making an effective electric fence, and why?

Answers

Answer:

Aluminum

Explanation:

The best material to use when creating an electric fence would be Aluminum. Aluminum wiring is incredibly durable and can be easily obtained. Since aluminum is a non-magnetic metal its conducting capabilities far exceed other metallic options in the market and is also why companies choose aluminum for their high tension cable wiring. Aside from being more expensive than other feasible options its durability and conducting capabilities make it easily the best option.

Answer:

Steel Wires

Explanation:

International house of pancakes

A plant might be emitting some dangerous pollutants that are environmentally harmful, but completely eliminating them would be so expensive that the plant would have to close, throwing many local inhabitants out of work. Assuming there is an obligation both to preserve jobs and to protect the environment. What is the best technique that should be used to resolve this problem?
Select one:
a. The convergence and divergence techniques
b. The Utilitarian approach
c. The creative middle way
d. The line drawing technique

Answers

Answer: c. The creative middle way

Explanation:

As there is both an obligation to preserve jobs and to protect the environment, a creative middle way which involves compromise would be most effective.

The company involved should process and remove the worst pollutants alone while leaving others so that the process will not be so expensive that they have to close down.

They will do this till a better and more environmentally beneficial solution can be found at which point they can then clean up the previous pollutants with the hope that they have not irrecoverably damaged the environment.

Why are most products the result of an innovation instead of an invention?

Answers

Answer:

they were updated rather than being created

Answer:

Invention is about creating something new, while innovation introduces the concept of “use” of an idea or method.

Ordan has _ 5 8 can of green paint and _ 3 6 can of blue paint. If the cans are the same size, does Jordan have more green paint or blue paint? Explain.

Answers

Answer:

Jordan has more green paints

Explanation:

Given

[tex]Green = \frac{5}{8}[/tex]

[tex]Blue = \frac{3}{6}[/tex]

Required

Which paint does he have more?

For better understanding, it's better to convert both measurements to decimal.

For the green paint:

[tex]Green = \frac{5}{8}[/tex]

[tex]Green = 0.625[/tex]

For the blue paint:

[tex]Blue = \frac{3}{6}[/tex]

[tex]Blue = 0.5[/tex]

By comparison:

[tex]0.625 > 0.5[/tex]

This means that Jordan has more green paints

At a specified point on a highway, vehicles are known to arrive according to a Poisson process. Vehicles are counted in 20-second intervals, and vehicle counts are taken in 120 of these time intervals. It is noted that no cars arrive in 18 of these 120 intervals. Approximate the number of these 120 intervals in which exactly three cars arrive. Estimate the percentage of time headways that will be 10 seconds or greater and those that will be less than 6 seconds.

Answers

Do you listen to lil uzi vert because he has been dropping some bars

Determine the period of each of the following discrete-time signals (if a signal is not periodic, denote its period by infinity)
a) cos(2pi0.15n)
b) cos(2n);
c) cos(pi0.3n) + cos(pi0.4n).

Answers

Answer:

a) it is periodic

N = (20/3)k = 20 { for K =3}

b) it is Non-Periodic.

N = ∞

c) x(n) is periodic

N = LCM ( 5, 20 )

Explanation:

We know that In Discrete time system, complex exponentials and sinusoidal signals are periodic only when ( 2π/w₀) ratio is a rational number.

then the period of the signal is given as

N = ( 2π/w₀)K

k is least integer for which N is also integer

Now, if x(n) = x1(n) + x2(n) and if x1(n) and x2(n) are periodic then x(n) will also be periodic; given N = LCM of N1 and N2

now

a) cos(2π(0.15)n)

w₀ = 2π(0.15)

Now, 2π/w₀ = 2π/2π(0.15) = 1/(0.15) = 1×20 / ( 0.15×20) = 20/3

so, it is periodic

N = (20/3)k = 20 { for K =3}

b) cos(2n);

w₀ = 2

Now, 2π/w₀ = 2π/2) = π

so, it is Non-Periodic.

N = ∞

c)  cos(π0.3n) + cos(π0.4n)

x(n) = x1(n) + x2(n)

x1(n) = cos(π0.3n)

x2(n) =  cos(π0.4n)

so

w₀ = π0.3

2π/w₀  = 2π/π0.3 = 2/0.3 = ( 2×10)/(0.3×10) = 20/3

∴ N1 = 20

AND

w₀ = π0.4

2π/w₀  = 2π/π0. = 2/0.4 = ( 2×10)/(0.4×10) = 20/4 = 5

∴ N² = 5

so, x(n) is periodic

N = LCM ( 5, 20 )

Consider the following statement, which is intended to create an ArrayList named a to store only elements of type Thing. Assume that the Thing class has been properly defined and includes a no-parameter constructor.
ArrayList a = /* missing code */;
Which of the following can be used to replace /* missing code */ so that the statement works as intended?
A: new Thing()
B: new ArrayList()
C: new ArrayList(Thing)
D: new ArrayList()
E: new ArrayList<>(Thing)

Answers

Answer:

new ArrayList<Thing>()

Explanation:

The syntax to declare an arrayList is:

ArrayList [var-name] = new ArrayList<data-type>()

From the question;

We understand that the variable name is: a

And the data-type is: Thing

So, the ArrayList of type Thing can be defined using:

ArrayList a = new ArrayList<Thing>();

Hence:

None of the options answers the question.

Examine the pressure-measuring device shown in the figure below. (a) What is the gauge pressure reading in psi at point A? (b) What is the pressure difference between point A and B? (c) Which is higher, pressure at point A or at point B? (d) What is the absolute pressure in psi at point D? State any assumptions you made

Answers

Answer: 45

Explanation:just cuase I need to

Unionized workers often earn more money than non-unionized workers.
O False
O True

Answers

I think it might be false correct me if I’m wrong

Answer:

Its true

Explanation:

false is wrong because I chose it and got it wrong lol

An NMOS transistor with kn = 1mA/V2 and Vt = 1V is operated with VGS = 2.5V. At what value of VDS does the transistor enter the saturation region? What value of ID is obtained in saturation?

Answers

Answer:

a) the point at which the transistor enters the saturation region is 1.5 v

b) the value of ID is obtained in saturation is 1.125 mA

Explanation:

Given the data in the question;

for an NMOS, the condition for the saturation is;

V_DS ≥ V_GS - V_t

V_GS is 2.5 v and V_t is 1 v

so we substitute

V_DS ≥ 2.5 - 1

V_DS = 1.5 v

so the point at which the transistor enters the saturation region is 1.5 v

The drain current I_d in the saturation region;

I_d = 1/2×μₙ×Cₐₓ×W/L×( V_GS - V_t)²

= 1/2Kₙ (  V_GS - V_t)²

our Kₙ is 1 mA/V², V_GS is 2.5v and V_t is 1 v

so we substitute

I_d = 1/2(1 mA/V²)( 2.5 - 1 )²

= 1/2(1 mA/V²)( 2.25)

= 1.125 mA

therefore, the value of ID is obtained in saturation is 1.125 mA

Other Questions
solve the equation by completing the square. (step by step please)4x(x + 6) = -40 Choose the graph of this equation. y = 2.5x BRAINLIST IF RIGHT Indica si lo que dice el texto es cierto o falso.En muchas escuelas secundarias, los estudiantes tienen la opcin de elegir dos especialidades: una relacionada con las humanidades y otra relacionada con el comercio.TrueFalse How does the hardness of a rock impact their ability to erode? two difference between drone bee and worker bee What's the furthest point from land in the world? can I get help with this Who did the indigenous people encounter? HELP1. You and your friend read a book about three animals that travel hundreds of miles to find their way back home. They face danger, illness, and injury, yet eventually arrive alive to greet their heartsick owners. Which of the following is the main idea of this book? A.Three animals on a journey B.Three animals with superpowersD. Three animals run away for an adventure C.Three animals risk their lives to return home2.Walking is not the most exciting form of exercise a person can take on for fitness. Yet it is low impact and requires no fancy equipment. That makes walking a simple activity for those new to exercise. Walking is less likely than other exercises to cause injury to leg tendons and muscles. All it requires is a good pair of sneakersno cables, stylish outfits, or weights required. Of course, a person could increase the benefit of a workout by adding weights or speed walking.Identify the main idea of this paragraph. Walking is a difficult and safe exercise for beginners. Walking is an easy and safe exercise for beginners. Walking is a boring and dangerous form of exercise. Walking is an exciting and very effective form of exercise.2.Walking is not the most exciting form of exercise a person can take on for fitness. Yet it is low impact and requires no fancy equipment. That makes walking a simple activity for those new to exercise. Walking is less likely than other exercises to cause injury to leg tendons and muscles. All it requires is a good pair of sneakersno cables, stylish outfits, or weights required. Of course, a person could increase the benefit of a workout by adding weights or speed walking.Explain whether the main idea is explicit or implicit in this paragraph. It is explicit because it is directly stated in the paragraph. It is explicit because it is not directly stated in the paragraph. It is implicit because it is directly stated in the paragraph. It is implicit because it is not directly stated in the paragraph.3. Walking is not the most exciting form of exercise a person can take on for fitness. Yet it is low impact and requires no fancy equipment. That makes walking a simple activity for those new to exercise. Walking is less likely than other exercises to cause injury to leg tendons and muscles. All it requires is a good pair of sneakersno cables, stylish outfits, or weights required. Of course, a person could increase the benefit of a workout by adding weights or speed walking.Which of the following sentences comes closest to stating the main idea in this paragraph? Yet it is low impact and requires no fancy equipment. That makes walking a simple activity for those new to exercise. Walking is less likely than other exercises to cause injury to leg tendons and muscles. Of course, a person could increase the benefit of a workout by adding weights or speed walking.4. Walking is not the most exciting form of exercise a person can take on for fitness. Yet it is low impact and requires no fancy equipment. That makes walking a simple activity for those new to exercise. Walking is less likely than other exercises to cause injury to leg tendons and muscles. All it requires is a good pair of sneakersno cables, stylish outfits, or weights required. Of course, a person could increase the benefit of a workout by adding weights or speed walking.How does the third sentence ("That makes walking...") support the main idea of the paragraph? It points out that walking is a good introduction to exercise for beginners. It says that walking is too easy for people who have experience with exercise. It points out that beginning exercisers may not like walking because it is too easy. It says that walking is less costly than other activities because it needs no equipment. 2. The temperature during the night dropped 2 degrees every hour. How many degrees did the temperature drop altogether after 3 1/4 hours? Be sure to show your work! PLEASE HELP .!!! ILL GIVE BRAINLIEST.. *EXRTA POINTS* .. DONT SKIP :(( ! ILL GIVE 40 POINTS . Why does the Moon have a greater influence on Earth's tides than the Sun does? A. because the Moon is more massive than the Sun B. because the Moon is farther away from Earth than the Sun is C. because the Moon is less massive than the Sun D. because the Moon is closer to Earth than the Sun is Les Goodman is interrogated by the accusing mob.Explain why this conflict is Man vs. Man Match the organelle to its function-questions and answersMake assemble proteins/ ribosomestorage/ vacuolepowerhouse plant or make energy/ mitochondriasupport and structure/ cytoskeletoncleanup/ lysosomeprocess and transport/ Golgi apparatus and ERcreate energy from sunlight/ chloroplastcontrol center/ nucleusfelt like I needed to do this :) hope it helps What is the most important feature of a podcast script? HELP PLEASE ASAP!!!!! Q1. The volumes of two spheres are 640 cm3 and 270 cm3. Find the ratio oftheir diameters. Plz help cie igcse math If the ratio between boys and girls is 3 to 2 if there are 12 boys how many girls are there Ski rental at Swinter a mountain resort is $40, and S is the price of the lift ticket. Write an expression to show the cost you lift tickets without ski rental and three left tickets with ski rental. Simplify your expression You and your friend collect each rocks and fossils. your friend collects three times as many rocks and half as many fossils as you. you collect 20 objects. your friend collects 20 objects. how many rocks andhow many fossils do you each collect. PLEASE ANSWER FAST! I DONT WANNA FAIL!!