HELLLPPP MEEEEE PLSSSS BRANLIEST ANSWER WILL BE AWAREDED Prepare a report on how is solar energy used in scientific experiments.

Answer:

SOLAR ENERGY

Our primary source of clean, abundant energy is the sun. The sun deposits 120,000 TW of

radiation on the surface of the Earth, far exceeding human needs even in the most aggressive

energy demand scenarios. The sun is Earth’s natural power source, driving the circulation of

global wind and ocean currents, the cycle of water evaporation and condensation that creates

rivers and lakes, and the biological cycles of photosynthesis and life. Covering 0.16% of the land

on Earth with 10% efficient solar conversion systems would provide 20 TW of power, nearly

twice the world’s consumption rate of fossil energy and the equivalent 20,000 1-GWe nuclear

fission plants. These comparisons illustrate the impressive magnitude of the solar resource,

providing an energy stream far more potent than present-day human technology can achieve.

All routes for utilizing solar energy exploit the functional steps of capture, conversion, and

storage. The sun’s energy arrives on Earth as radiation distributed across the color spectrum

from infrared to ultraviolet. The energy of this radiation must be captured as excited electronhole pairs in a semiconductor, a dye, or a chromophore, or as heat in a thermal storage medium.

Excited electrons and holes can be tapped off for immediate conversion to electrical power, or

transferred to biological or chemical molecules for conversion to fuel. Natural photosynthesis

produces fuel in the form of sugars and other carbohydrates derived from the reduction of CO2 in

the atmosphere and used to power the growth of plants. The plants themselves become available as biomass for combustion as primary fuels or for conversion in reactors to secondary fuels like

liquid ethanol or gaseous carbon monoxide, methane, and hydrogen. We are now learning to

mimic the natural photosynthetic process in the laboratory using artificial molecular assemblies,

where the excited electrons and holes can drive chemical reactions to produce fuels that link to

our existing energy networks. Atmospheric CO2 can be reduced to ethanol or methane, or water

can be split to create hydrogen. These fuels are the storage media for solar energy, bridging the

natural day-night, winter-summer, and cloudy-sunny cycles of solar radiation.

In addition to electric and chemical conversion routes, solar radiation can be converted to heat

energy. Solar concentrators focus sunlight collected over a large area to a line or spot where heat

is collected in an absorber. Temperatures as high as 3,000°C can be generated to drive chemical

reactions, or heat can be collected at lower temperatures and transferred to a thermal storage

medium like water for distributed space heating or steam to drive an engine. Effective storage of

solar energy as heat requires developing thermal storage media that accumulate heat efficiently

during sunny periods and release heat slowly during dark or cloudy periods. Heat is one of the

most versatile forms of energy, the common link in nearly all our energy networks. Solar thermal

conversion can replace much of the heat now supplied by fossil fuel.

Although many routes use solar energy to produce electricity, fuel, and heat, none are currently

competitive with fossil fuels for a combination of cost, reliability, and performance. Solar

electricity from photovoltaics is too costly, by factors of 5–10, to compete with fossil-derived

electricity, and is too costly by factors of 25–50 to compete with fossil fuel as a primary energy

source. Solar fuels in the form of biomass produce electricity and heat at costs that are within

range of fossil fuels, but their production capacity is limited. The low efficiency with which they

convert sunlight to stored energy means large land areas are required. To produce the full 13 TW

of power used by the planet, nearly all the arable land on Earth would need to be planted with

switchgrass, the fastest-growing energy crop. Artificial photosynthetic systems are promising

routes for converting solar energy to fuels, but they are still in the laboratory stage where the

principles of their assembly and functionality are being explored. Solar thermal systems provide

the lowest-cost solar electricity at the present time, but require large areas in the Sun Belt and

breakthroughs in materials to become economically competitive with fossil energy as a primary

energy source. While solar energy has enormous promise as a clean, abundant, economical

energy source, it presents formidable basic research challenges in designing materials and in

understanding the electronic and molecular basis of capture, conversion, and storage before its

promise can be realized.

Explanation:

Hope this is useful! Have a amazing day! God Bless you!!!

The long march: Which sentence describes the main idea of the text?

Screenwriters, and television writers may choose to unfold the development of their characters in different ways. In some instances, a writer can take an entire film or television season to reveal the inner workings of their characters. In other instances, they may reveal the character's nature very early. Think about a movie OR a television show that you have enjoyed. Discuss one character that stood out to you in the work and be sure to include the following information:

What does the character's appearance tell us about their personality? Consider their age, look, costuming, etc.
What does the character's behavior around other characters tell us about their personality?
What does the character want and how does that influence their actions?
Be sure to provide specific evidence from the television show or movie that you are discussing to support your claims.

Who has been accused of William’s murder?

Who was the author of the poem “The odyssey”?

Your parents were unexpectedly delayed abroad and missed your younger brother's birthday.
You had to organise a party for him.
Write a letter to a friend, telling them about your experience.
In your letter, you should:

describe how you felt when you realized that you had to organize the party yourself

tell your friend about the party

say whether you thought the party was a success.


The pictures above may give you some Ideas, and you should try to use some ideas of your
own.
Your letter should be between 100 and 150 words long. Do not write an address.

Hello!
Can someone answer the following multiple-choice questions?

1. It can most reasonably be inferred that Mr. Johnson views Lady Susan with
A) admiration, because she is a single
mother
B) dislike, because she is deceitful
C) irritation, because she plays jokes on
him
D) concern, because she is in danger

2. Which choice provides the best evidence
for the answer to the previous question?
A) Lines 2 - 7 ("...and rejoice....tricked.")
B) Lines 7 - 9 ("I arrived...Vernon.")
C) Lines 15 - 18 ("I was.....
me.")
D) Lines 21 - 24 ("..and yet...last.")

3. As used in line 48, "wanting" most nearly means
A) desiring
B) lacking
C) requiring
D) requesting

4. Which choice best summarizes the second paragraph of the passage (lines 25 - 65)?
A) A character regrets a decision and
expresses relief that things have
turned out well in spite of her actions.
B) A character marries against the wishes
of his family, has many children and
becomes very successful.
C) A character explains her past behavior
towards her brother-in-law and
rationalizes her unkindness.
D) A character discusses a conflict
between her husband and his brother
and describes how she will influence
the brother's children in favor of her
husband.

5. It can be inferred from the passage that
Lady Susan loft Mainwaring because
A) she wanted to see her family
B) her husband had passed away
C) she was romantically involved with
Mainwaring
D) she had to finalize the sale of the castle

6. Which choice provides the best evidence for the answer to the previous question?
A) Lines 61 - 64 ("...I know....sake."')
B) Lines 66 - 67 ("I need....thoughts.")
C) Lines 67-69 ("I found.....fate.")
D) Lines 71 - 72 ("..and when....you.")

What is a monologue? What do you expect from a monologue given by a person like Jimmy Kimmel?

what is the phrasal verb of asked out​

Why did Dante most likely choose to write his views on Christianity in an
indirect manner when he wrote the Divine Comedy?
• A. He was not sure of his exact views on many Christian values, so
he left room for personal interpretation.
•
B. He knew his audience would be larger if he wrote an entertaining
story that waug't too serious.
• C. He wanted to represent Christianity in a positive light but felt the
state of the Church was too negative.
• D. He wanted other writers to imitate his style of avoiding direct
character conflict.

‘A wise person can easily turn a difficult situation in his/her favor. ‘Do you agree with this statement? Why/Why not?

what's the word? what is something that can't be true also can't be false?

Which answer best fits what the acronym "HDEC" stands for?

After shooting the arrow at the pig, what was katniss' biggest fear?

Complete the sentences with the correct spelling of the missing words.
John found a stray cat in the some milk. The milk The cat looked hungry and sad, so John decided to feed the cat. He brought her home and fed her the cat's thirst. The cat seemed very V after that. ​

In your opinion, are there any, and if so what, circumstances where it would be appropriate for a journalist to publish government secrets?

amog us..............

How do Don Trine's actions develop a theme in "The Harvest"?
Don Trine keeps secrets from the other migrant workers. This develops the
theme that you can never really know a person.
Don Trine enjoys interacting with the earth. This develops the theme that the
earth is a living thing and it is important to connect with it.
Don Trine hides his money so others won't ask for it. This develops the theme
that money only creates happiness when it is shared.
Don Trine does not allow anyone to accompany him on his walks. This develops
the theme that being alone is not the same as being lonely.

• Match the words in the text with the definitions below:
crops, farmyard, plough, seeds, land, wheat,

1) the area next to the farm buildings
2) an area of ground
3) the parts of a plant that you put into the ground to grow
new plants
4) a plant that is used to make bread
5) plants that farmers grow
6) a machine that farmers use to prepare fields for planting​

Read the excerpt from A Black Hole is NOT a Hole.

Any and all events on the Sun remain invisible to you for as long as it is below the horizon. If the Sun suddenly turned purple, you wouldn’t see it happen.

In a similar way, once an object enters the extreme gravity zone of a black hole, the object disappears from view.

Which word signals that a comparison is being made?
A) extreme
B) object
C) gravity
D) similar

Write a short poem about the joy of reading.

Archeologist someone who searches for artifacts to prove theories about human history colons and parentheses

Select the sentence which contains one independent clause and one subordinate clause.
A)
Since you are from New York, perhaps you can point us to the closest
subway station.
B)
You are from New York, so perhaps you can point us to the closest subway
station,
E
You are from New York, and perhaps you can point us to the closest
subway station
D)
You are from New York, perhaps you can point us to the closest subway
station

Roses are red violets are blue

Click to read "Musée des Beaux Arts," by W. H. Auden. Then answer the question.

Which line(s) from Auden's poem capture(s) the indifference in Brueghel's poem?

a) About suffering they were never wrong, / The Old Masters:
b) there always must be / Children who did not specially want it to happen, skating / On a pond at the edge of the wood
c) the expensive delicate ship that must have seen / Something amazing, a boy falling out of the sky, / Had somewhere to get to and sailed calmly on.
d) the ploughman may / Have heard the splash, the forsaken cry

Many works of fiction seem too convincing to be made up stories

1)
Melanie is typing this sentence in her online reading journal.
Which sentence is written correctly?
A My favorite chapter in "The Secret Garden" is The Key to the Garden.
B My favorite chapter in The Secret Garden is The Key to the Garden
C My favorite chapter in The Secret Garden is "The key to the Garden."
D My favorite chapter in The Secret Garden is The Key to the Garden.
Check Answer

help it’s due in 15 mins

Read this excerpt from Paragraph two of Poe's "The Black Cat" and answer the question.

There is something in the unselfish and self-sacrificing love of a brute, which goes directly to the heart of him who has had frequent occasion to test the paltry friendship and gossamer fidelity of mere Man.

Which phrases from this excerpt support the narrator's distrust of human beings? Select all that apply.

A "unselfish and self-sacrificing"
B "love of a brute"
C "directly to the heart"
D "frequent occasion"
E "paltry friendship"
F "gossamer fidelity"

What is Wollstonecraft’s purpose in writing this letter?

Question 1 options:

To attack Talleyrand and map out the reasons why his opinion is wrong


To convince Talleyrand to reconsider his views on women and education


To request that Talleyrand arrange a meeting for her with French politicians


To shame Talleyrand into retracting his earlier published views about women

Question 2 (Mandatory) (2 points)
How does paragraph 3 help to support the above purpose?

Question 2 options:

She is complimenting her audience and stroking his ego.


She is listing her own specific desires in a clear manner.


She is offending her audience and making him defensive.


She is offering irrefutable proof of his flawed logic.

Question 3 (Mandatory) (2 points)
Where is Wollstonecraft’s rhetoric (language) most effective in advancing her purpose?

Question 3 options:

Page 1 - paragraph 2 - “So it is my affection for the whole human race …”


Page 1 - paragraph 4 - “Manners and morals are so closely related …”


Page 2 - paragraph 7 - “Consider these remarks dispassionately …”


Page 3 - paragraph 15 - “The father of a family won’t weaken his constitution…”

Question 4 (Mandatory) (2 points)
Which of the following statements is a fair summary of page 3?

When women are forced into a domestic role in society and are denied their rights, they will ___.

Question 4 options:

begin to act like tyrants in an effort to gain some control


fall into a depression that impacts their entire household


seek attention and power by immoral methods instead


upset the entire social order and cause widespread chaos

Question 5 (Mandatory) (2 points)
Which quote from the text best supports the answer to the above question?

Question 5 options:

“... man must in some way act like a tyrant and that tyranny ...will always undermine morality.”


“... they try to make things more fair by retaliation”


“... they will seek illicit privileges in ways that make both men and themselves vicious”


“With fairer laws forming your citizens, marriage can become more sacred;”

Question 6 (Mandatory) (2 points)
We can infer that the author would agree that ______.

Question 6 options:

logic and reason is not an effective tactic to reach her target audience


men should never speak on behalf of women again


there is little hope for progressive changes in her lifetime


women should be included in decisions made about their education

Question 7 (Mandatory) (2 points)
Which of the following sentences best reflects the author’s main claim and purpose for writing?

Question 7 options:

“If woman isn’t fitted by education to become man’s companion, she will stop the progress of knowledge, because truth must be common to all;”


“If you are going to exclude women, without consulting them, from sharing in the natural rights of mankind, then defend yourself against accusations of injustice and inconsistency by proving that women don’t have reason.”


“I know that you firmly believe you are acting in the manner most likely to promote women’s happiness; but who made man the exclusive judge of that if woman shares with him the gift of reason?”


“My opinion about the rights and duties of woman seems to flow so naturally from those simple principles that it seems almost inevitable that some of the enlarged minds who formed your admirable constitution will agree with me.”

Question 8 (Mandatory) (2 points)
The document that you read is titled a “Dedicatory Letter”. What does this mean?

Question 8 options:

It is a letter asking him to print a public recommendation for her book.


It is a letter professing her respect and admiration to him.


It is a letter that appears at the beginning of her larger book, a dedication to him.


It is a letter that she is mailing to him in advance of the book’s publication.

Question 9 (Mandatory) (2 points)
Which meaning of the word abject BEST fits how it is used in the sentence from page 2?

They may be convenient slaves, but slavery will have its constant effect, degrading the master and the abject dependent.

Question 9 options:

despicable


hopeless


obsolete


shameless


What does Wollstonecraft mean when she tells Talleyrand to “Consider these remarks dispassionately, Sir,” on page 2? What else could she have said and still mean the same thing?



A. Distance yourself from this subject.


B. Get fired up about this.


C. Let your mind wander for a bit.


D. Think about this logically.

Before clocks were made, people kept track of time by other means. In
ancient Egypt, people used a water clock. Water dripped slowly from one
clay pot into another. People measured time according to how long it
took one pot to empty and the other one to fill. Candle clocks were
common during the Middle Ages. As such, when a candle burned, marks
on its side showed about how much time had passed. A final ancient way
to measure time was the sundial, which used the movement of the sun
across the sky. The shadows moving across the face of the sundial
showed the current time. What is the main idea? *
As such, when a candle burned, marks on its side showed about how much time had
passed.
Before clocks were made, people kept track by other means.
In ancient Egypt, people used a water clock.
All the above