Consider a gray and opaque surface at 0oc in an environment at 25oc. the surface has an emissivity of 0.8. if the radiation incident on the surface is 240 w/m2 , the radiosity of this surface is:_________

Answers

Answer 1

To determine the radiosity of the gray and opaque surface, we need to consider the Stefan-Boltzmann law, the radiosity of the gray and opaque surface is approximately 346.97 W/m^2..

The Stefan-Boltzmann law states that the radiated power per unit area (radiosity) is proportional to the emissivity (ε) of the surface and the fourth power of the temperature difference (ΔT) between the surface and its surroundings. Mathematically, it can be expressed as:

Radiosity = \(ε * σ * ΔT^4\)

Where:

- Radiosity: The radiated power per unit area of the surface.

- ε (Emissivity): The emissivity of the surface. In this case, it is given as 0.8.

- σ (Stefan-Boltzmann constant): A constant value, approximately \(5.67 x 10^-8 W/(m^2 * K^4).\)

- ΔT (Temperature difference): The difference between the temperature of the surface and the surroundings. In this case, it is (25 - 0) = 25 degrees Celsius.

Now, substituting the given values into the formula:

Radiosity = 0.8 * (5.67 x 10^-8) * (25 + 273.15)^4

To ensure accurate calculations, we need to convert the temperature from Celsius to Kelvin by adding 273.15.

Calculating the radiosity:

Radiosity =\(0.8 * (5.67 x 10^-8) * (298.15)^4\)

After performing the calculations, the radiosity of the surface is approximately 346.97 W/m^2.

Therefore, the radiosity of the gray and opaque surface is approximately 346.97 W/m^2.

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Related Questions

Nepal is a common garden of many castes, cultures and civilizations. Elaborate the statement.​

Answers

Answer:

Explanation:

This statement is right, Nepal is a common castles of religion, and civillization and they are well known with their culture because their culture mean so much to them. There are diverse of tribes among Nepal and they have more than 22 spoken language.

Nepal is known with four castle as well as 36 sub castle, even with these number of castle they still live together in peace and love.

Therefore, Nepal is a common garden of many castes, cultures and civilizations.

Explanation:

Nepal is a small country but it is very rich in natural and cultural diversities. As many as 125 caste of people live their most of the people have their own languages,customs and religions. They help each other and support when needed, they do not quarrel in the name of caste, religion, culture that's why Nepal is a common garden of many castes, culture and civilization.

H©pe it will help you.....

arthur has recently moved to a new neighborhood. he repeatedly says the address of his new house so that he does not forget it before writing it down. in this scenario, arthur is using a form of a mnemonic device called

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Arthur has recently moved to a new neighborhood. he repeatedly says the address of his new house so that he does not forget it before writing it down. Arthur is using a form of a mnemonic device called Rehearsal.

Repetition of material to be remembered consciously is a memory technique called rehearsal. It is a useful method for keeping knowledge in short-term memory and it can aid in storing it in long-term memory.

We are actively digesting the material we wish to remember as we practice. We are enhancing the neural connections that are used to encode the information in our brains by repeatedly repeating it.

Rehearsal can take many different forms, such as repeating knowledge aloud, outlining it, or mentally going over it. In Arthur's situation, he is saying aloud to himself the address of his new home in an effort to memorize it.

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How many political parties do we have in the U.S.? What are some topics and / or issues they disagree over?

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There are two political parties do we have in the U.S. - The Republican Party and the Democratic Party.

Political factions or parties began to make throughout the struggle over agreement of the federal Constitution of 1787. The topics and / or issues which Republican Party disagree over are that they understand to support right-leaning ideologies of political orientation, social political orientation, and economic political theory, among different -isms.

Thus, Republicans broadly speaking advocate for ancient values, a coffee degree of state interference, and huge support of the personal sector. Whereas, the Democratic Party obtain to market social programs, labor unions, client protection, geographic point safety regulation, civil rights, incapacity rights, racial equity, rules against environmental pollution, and criminal justice reform.

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Under Article 7 of the Texas Constitution, the State Board of Education has responsibility for which of the following? a. elementary and secondary education b. community colleges c. Texas A&M University d. The University of Texas

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Under Article 7 of the Texas Constitution, the State Board of Education has responsibility for  a. elementary and secondary education

Since the general dissemination of knowledge is essential to the protection of human freedom and rights, it is the legislature's duty to develop and make appropriate arrangements to support and maintain the efficient system of public free schools. is.

The Constitution of Texas is a document that establishes the structure and function of the Texas Government and lists the fundamental rights of Texas citizens.

Amendments to the Texas Constitution may address the technical challenges faced by state and local government agencies. Since the 1990s, Texas has become more dependent on oil and gas for its work.

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name the important valley of nepal

Answers

Answer:

The Inner Terai is called "bhitri Terai " in Nepali language.

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Since Spain and France used mercantilism, how will French colonists in Louisiana be affected by Spain taking over the colony?

I am offering 100 pionts.

Answers

French colonists in Louisiana were known to be be affected by Spain taking over the colony as they were said to have reacted negatively.

What was the French colonists reaction to Spain taking control of Louisiana?

Spain was said to be very slow to their act of actually possessing its newly obtained colony.

In all, French colonists were known to have reacted negatively to the notion of Spanish rule.

Spain was also hated by them due to the fact that they spend sufficient funds for good and effective military presence or good maintenance of the colony.

Therefore, French colonists in Louisiana were known to be be affected by Spain taking over the colony as they were said to have reacted negatively.

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Answer: French colonists in Louisiana were known to be be affected by Spain taking over the colony as they were said to have reacted negatively.

Explanation:

Is shifting real or is it like a joke?

Answers

Answer:

its a joke thats real

Explanation:

why are three Challenges in development of human resources in nepal? how can they be solved?​

Answers

Answer:

nepal human resources

Explanation:

by using resources well and it can cause development in the challenges

Although information can be stored equally accurately in different kinds of representations, ______.A. Some kinds of representations are more convenient than others for performing specific computationsB. It is impossible to convert an analog representation into a propositional representation without significant loss of informationC. Analog representations are usually more accurate than propositional representationsD. Propositional representations are usually more accurate than analog representations

Answers

Although information can be stored equally accurately in different kinds of representations, some kinds of representations are more convenient than others for performing specific computations. Option A is the correct answer.

While different kinds of representations, such as analog and propositional, can store information equally accurately, some are more convenient than others for specific computations. For example, analog representations may be more useful for spatial reasoning tasks, while propositional representations may be better suited for logical reasoning. It is also possible to convert between different kinds of representations, although this may result in some loss of information.

Overall, the choice of representation depends on the task at hand and the type of information being processed.

Option A is the correct answer.

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The British accused of stirring up trouble and causing the Boston Tea Party.

A. Samuel Adams
B. John Hancock
C. Benjamin Franklin
D. Phillis Wheatley

Answers

Answer:

john hancock

Explanation:

What EFFECT did the missions have on the native Texas population?

Answers

Answer:

The missions introduced European livestock, fruits, vegetables, and industry into the Texas area. In addition to the presidio (fortified church) and pueblo (town), the misión was one of the three major agencies employed by the Spanish crown to extend its borders and consolidate its colonial territories.

Explanation:

Hope this helps. I fit does please give brainliest

What should I do?? Everyone is going back to school and I'm one of the only ones who isn't. Is there any way I can cheer up?

Answers

Answer:

Iv'e Been Put in the same situation Buddy

Explanation:

Hey, all of my friends are in School and my parents are too strict to let me go but Hey, all the students there don't have the perfect life. they don't get to always see their friends becuase they are put in seperate homerooms. you get to see them on computer and everybody is all connected in the same way. I really hope you do feel better...

it’s ok! atleast you’re staying safe. be happy :D

50 POINTS PLEASE HELP ITS DUE AT 11:59 and I haven't started it

Answers

Answer:

oooooo thanksssssss

Explanation:

How are you doing?

We are not sure of Lao-Tzu’s position in his society. What do we think he may have been?

A) a shepherd

B) a border guard on the western frontier

C) keeper of the Royal Archives in the capital

D) a cousin of the emperor

Answers

Answer:

C) keeper of the royal archives in the capital

Read and write a response Make sure to write a complete sentence and explain yourself in detail (At least 2 - 3 sentences for each prompt (you have to analyze/evaluate) Please help. The blue color is executive and the white one is legislative.

Read and write a response Make sure to write a complete sentence and explain yourself in detail (At least
Read and write a response Make sure to write a complete sentence and explain yourself in detail (At least

Answers

The founding father's gave congress the right to override president's veto to prevent the President from blocking an act when significant support for it exists.

15. Citizens elect representatives to serve in legislative bodies and communicate their concerns to the government.

The Senate alone has the authority to approve treaties, give advise, and confirm any presidential nominations that need to be confirmed by the Senate.

So yes, electing 435 representatives and 100 senators is helpful to government.

16. Any proposed legislation must be evaluated by the Supreme Court before Congress may vote on it. The president has the right to pause the session of Congress at any moment to concentrate on another matter.

The minimum amount of time required by the Constitution for Congress to review all new legislation before voting.

That is the reason Congress takes so much time to pass a law.

17. Legally speaking, Congress spends money on things like Social Security and Medicare as well as on things like military hardware, road upkeep, building construction, research, and education.

It is everything the public needs.

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5. Describe Kenya's population growth. How does this impact their economy? What is
USAID doing in the area of family planning? Why is this such a challenge for some
groups
and what is being done about it? What are cycle beads?

Answers

Kenya's population has been growing rapidly in recent years, with an estimated population of around 54 million people in 2021. The country's population growth rate is estimated at around 2.2% per year, which is higher than the global average.

What is the influence of the population growth on their economy?

This rapid population growth puts a strain on Kenya's economy as resources are stretched to provide for the growing population. This includes providing basic needs such as food, water, healthcare, and education.

The impact of population growth on the Kenyan economy is significant. With a growing population, there is increased demand for resources and services, which can lead to rising prices, increased poverty, and inequality. Additionally, the rapid population growth rate can also negatively affect the environment, contributing to deforestation, loss of biodiversity, and climate change.

To address the issue of population growth, the United States Agency for International Development (USAID) has been working with the Kenyan government and local organizations to promote family planning. USAID's family planning programs in Kenya focus on increasing access to contraceptive methods and education about family planning. They work with local health clinics to provide counseling, education, and contraceptives to women and couples.

However, promoting family planning has been a challenge for some groups in Kenya, particularly in rural areas where cultural and religious beliefs often discourage the use of contraceptives. Some people believe that having many children is a sign of wealth and prestige, while others view family planning as contrary to religious teachings. In addition, there are also logistical challenges to accessing family planning services in some areas due to inadequate infrastructure and lack of resources.

Cycle beads are a type of family planning tool that is designed to help women track their menstrual cycle and identify their fertile days. They consist of a string of colored beads that correspond to different stages of the menstrual cycle. By tracking the position of the bead, women can determine whether they are in a fertile period and make informed decisions about contraception. Cycle beads are a simple and low-cost tool that can be used by women who have limited access to other family planning methods.

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in jones and harris (1967) castro study, participants read speeches by debaters whose positions had either been assigned to them by the debate coach or which they had freely chosen. the speeches either supported or attacked cuban leader fidel castro. what did the study find and what social psychological phenomenon does this study demonstrate?

Answers

Jones and Harris (1967) conducted a study where participants read speeches about Fidel Castro that were either assigned to the debaters or freely chosen by them. The speeches either supported or attacked Castro. The study found that participants attributed the debaters' attitudes towards Castro to their own personal beliefs, regardless of whether the debater chose their position or it was assigned to them. This phenomenon is known as the fundamental attribution error, which is the tendency to overemphasize dispositional (internal) explanations for behavior, rather than situational (external) factors. The study demonstrates how people tend to make assumptions about others' attitudes and beliefs without considering external factors that may have influenced their behavior.
Hi, I'm happy to help with your question about the Jones and Harris (1967) Castro study. The study found that participants were more likely to attribute the debaters' positions on Fidel Castro to their personal beliefs, even when they knew that the positions had been assigned by the debate coach. This social psychological phenomenon demonstrated in this study is known as the fundamental attribution error, which is the tendency to overemphasize dispositional factors (such as personal beliefs) and underestimate situational factors (such as being assigned a position) when explaining the behavior of others.

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Jones and Harris' (1967) Castro study found that participants attributed more personal beliefs and attitudes to the debaters who freely chose their positions compared to those whose positions were assigned by the coach.

The study also found that participants tended to attribute more positive traits to debaters who supported Castro and more negative traits to those who attacked him.

The study demonstrated the fundamental attribution error, which is the tendency to overestimate dispositional factors and underestimate situational factors when explaining others' behavior. In this case, participants attributed the debaters' positions to their personal beliefs and attitudes (dispositional factors) rather than considering that they may have been assigned a position by the coach (situational factor). This study also demonstrates the impact of confirmation bias, which is the tendency to interpret information in a way that confirms pre-existing beliefs and attitudes. Participants were more likely to attribute positive traits to debaters who supported Castro and negative traits to those who attacked him, which supports their pre-existing attitudes towards Castro.

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how many ohioans have some native american ancestry

Answers

Explanation:

Hundreds of tribes of American Indians have lived in North America. The United States government recognized 593 different tribes within the United States in 2005. Numerous tribal groups have either lived in Ohio or claimed land in the state.

All members of a family work as farmers on a very small pece of land. They use tools and techniques that have been passed down for generations rather than any modern technology As a result, they rarely produce more food than they need for themselves during the year.

A.market economy

B.Traditional economy

C.command economy

D.capitalist economy​

Answers

B) Traditional economy

Answer:

traditional econ

Explanation:

a pex

What was the world’s first system of writing called? Please someone help me out.

Answers

Answer: Cuneiform script

Explanation:

The world's first system of writing was called the Cuneiform Script. The Cuneiform Script was the earliest form of writing developed by Sumerians in ancient Mesopotamia. It is a type of writing on a clay tablet in which the "letters" are wedge-shaped marks.

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How did the inventions and accomplishments of this civilization contribute to human progress

Answers

The wide variety of technologies and science discoveries produced by humanity has led to the building and development of the civilizations of each age, stimulated economic growth, raised people's standards of living, encouraged cultural development, and had a tremendous impact on religion, thought, and many other human ...

How did the articles of confederation address this grievance from the declaration of independence?
"For imposing taxes on us without our consent"
A. Tax collection was banned at all levels of government
B. Each state requested tax donations from its people
C. Congress could not create taxes
D. Sates could not create taxes

Answers

The grievance from the Declaration of Independence, "For imposing taxes on us without our consent," was partially addressed by the Articles of Confederation through D) States could not create taxes.

D) Under the Articles of Confederation, which served as the first constitution of the United States from 1781 to 1789, the power to impose taxes rested primarily with the individual states.

The federal government had limited authority and lacked the power to levy direct taxes on its citizens. Instead, it relied on requisitions, which were requests for financial contributions from the states.

The Articles of Confederation established a weak central government intentionally, as the framers wanted to prevent a strong central authority that could potentially infringe on the states' sovereignty.

However, this system had its drawbacks.

The federal government often faced difficulties in raising revenue to fund its operations and meet its financial obligations, including paying off war debts.

The lack of centralized taxation authority was one of the key weaknesses of the Articles of Confederation.

It hindered the federal government's ability to generate sufficient revenue and led to fiscal instability.

The government heavily relied on voluntary contributions from the states, but many states were unable or unwilling to meet their requisition obligations consistently.

The limitations of the Articles of Confederation in addressing taxation needs and maintaining financial stability became evident, prompting the need for a stronger central government.

This ultimately led to the drafting and adoption of the United States Constitution in 1787, which replaced the Articles of Confederation and granted the federal government broader powers, including the authority to levy taxes directly on individuals.

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PLS HELP

question/How does the song try to make union members feel?
Song Title: Union Women* Woody Guthrie

Answers

"Union Maid" is a union song, with lyrics written by Woody Guthrie in response to a request for a union song from a female point of view.

What is a union song?

Music was created for union-related activities like picket lines. A request for a union song from the perspective of a woman led Woody Guthrie to write the lyrics to "Union Maid," a union song. The tune was taken from Robert Schumann's piano song "The Happy Farmer, Returning From Work" in his 1848 Album for the Young, Opus 68, which was later modified into the 1907 classic "Red Wing" by Kerry Mills. Later, Lampell and other members of the Almanac wrote the song's final line, which discusses the place of women in relationships. This verse has been changed or eliminated from performances over the years to reflect shifting ideologies.

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An embargo is a trade barrier that:
O A. imposes taxes on imported goods.
B. prevents trade with a single country.
C. limits the imports from a country.
D. sets quality requirements on imports.

Answers

Answer:

The answer is Option B. prevents trade with a single country.

Why was lack of central leadership a poor problem in government

Answers

Answer:

The Articles established a weak central government and placed most powers in the hands of the states. Under the Articles, the US economy faltered, since the central government lacked the power to enforce tax laws or regulate commerce.

Explanation:

The major downfall of the Articles of Confederation was simply weakness. The federal government, under the Articles, was too weak to enforce their laws and therefore had no power. The Continental Congress had borrowed money to fight the Revolutionary War and could not repay their debts

Buddhism is practiced mostly in which continent

Answers

Asia. You can even see this today. Hope this helps
It’s mostly practiced in Asia.


Explain two contrasting ways in which Vaisakhi Baisakhi) is celebrated by Sikhs.

Answers

Answer:

On Vaisakhi, Sikhs go to the Gurdwara in the morning for a service. Afterwards, they have a procession through the streets with lots of singing, chanting and colourful clothes. The procession is called the Nagar Kirtan. In the evening, Sikhs have a special meal with family and friends.


8. Why doesn't Senator Leighton's wife want to get too involved in the suffrage movement?

Answers

Senator Leighton's wife "Emilly" gave up on getting involved in the suffrage movement because her husband is against it.

What is the suffragist movement?

The suffragist movement refers to the a movement that campaigned and fought for woman right especially the right to vote for women in the United States.

However, Senator Thomas Leighton was a fictional senator whose wife called "Emily" was involved in the suffragist movement.

In conclusion, later on, the Senator Leighton's wife "Emilly" gave up on getting involved in the suffrage movement because her husband is against it.

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Enlightenment philosophers such as John Locke and Jean-Jacques Rousseau challenged the idea of the divine right of kings. They wrote about a government’s obligations to uphold people’s rights and how the government should be based on the consent of the governed.



These new ideas encouraged people to:

Enlightenment philosophers such as John Locke and Jean-Jacques Rousseau challenged the idea of the divine

Answers

Answer: Engage in revolution to establish democratic governments

On the first day of class, your teacher walked in and told everyone to look to the left and to the right at the people sitting next to them, because at the end of the semester only one of them would still be in the class with a passing grade. The teacher stated a
Multiple Choice
self-fulfilling prophecy.
fundamental attribution bias.
recency effect.
self-serving bias.
race/ethnicity stereotype.

Answers

Your teacher announced to the class on the first day that only one student will still be in the class at the end of the semester with a passing grade, so everyone should glance to their left and right at the people seated next to them. A self-fulfilling prophecy was made by the teacher.

In the classroom, where should the teacher stand when speaking?

Make eye contact with each student before speaking by taking a position where the entire class can see you.

Can pupils recall their seats during the opening class meeting?

Additionally, I've observed that during the entire semester, students consistently sit in the same seat that they chose for the first class meeting.

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