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!!!
Dickon and the robin like Mary.
Question 4 options:
True
False
Answer:
Still, while Mary and Dickon are real friends with the robin, the novel never forgets that the robin is a bird and not a human.
Explanation:
Read the dictionary entry for the word stagnation.
stagnation \ stag-ˈnā-shən \ noun: a state of inactivity or lack of growth
Based on this definition, which sentence best illustrates the use of the word stagnant?
After years of losing money, our business is finally strong and stagnant.
These exciting new classes should boost our stagnant enrollment.
Due to the heavy rain, there was no one on the stagnant beach this morning.
Bring us your stagnant clothes, and we will either donate or recycle them.
Answer:
Yes it’s B “ These exciting new classes should boost our stagnant enrollment“
Explanation:
Took th test!
Estimate 51.286+37.43 by first rounding each number to the nearest whole number.
I need this and fast i will mark brainliest
since it is given estimate to nearest whole number ,51.286 will be rounded to 51 and 37.43 will be rounded 37.so add 51+36 which is equal to 87
who is narrator in the story- devils of rose hall
Answer: First Person narrator lily
Explanation:
Have u ever had love at first sight
I get it but I don’t get it lol someone help pls
Answer:
My uncle gave a dog to my cousin, which was adopted from the shelter.
Terry spotted a baby owl on his way to school. ( I dont see any mistakes with this one)
Write your own sentences using correct pronouns and antecedents. Use the topics provided.
1. (At School)
2. (At a Restaurant)
Answer:
when i am at school i have five classes one is larts the second is gmas and the third is math and the fourth is science and the last is gym or health.
if i were at a restaurant i would go to texas road house because that is my and my familys favorete family food place to go to.
Explanation:
(I figured the question out already)
Answer:
so free points?
Explanation:
coolioo
Which line is an example of personification?
a. line 9
b. line 18
c. line 23
d. line 26
Answer:
line 18 because it shows that she does not care, and that she is a careless person (sorry if it is wrong)
can someone please help me make sentences combining 2 of the words below.(u can't use the same 2 words again)
Answer:The man is deeply shallow after his wife and him were never alone together.
Explanation:
That I did always love I bring thee Proof That till I loved I never lived—Enough— What is the effect of the use of the word "enough" in this quotation? It shows the speaker's insecurity about love.
Answer: It shows the speaker's insecurity about love. It emphasizes the speaker's desperation.
Explanation:
Answer:C) it reveals the speaker’s profound emotion towards her love.
Explanation:She emphasizes that she has always loved, but perhaps she did not have enough time to give all that love she had to give. However, she is so desperate to give her love, that even after death she still comes back to her love to continue showing her attachment and devotion. “I bring thee proof” This is that she brings the proof that she has always loved. She later mentions in the poem that love is life and love has immortality. This means that while we live, loving gives life and light to our hearts, and that after we die it remains in the hearts of the people who were with us.
HELLPPPIn literature, symbols are not found in which of the following? (1 point)
Setting descriptions
Description of colors
Characters' names
Author's name
Answer:
Author's Name
Explanation:
The other three answer choices can all be full of potential symbolism. For example, red could represent passion or anger. A character wearing glasses might represent the moral clarity of society. An island might represent isolation.
PLZ HURRY 50 POINTS!!! Will report if wrong. Read the excerpt from act 2, scene 1, of Julius Caesar.
[BRUTUS.] Th’ abuse of greatness is when it disjoins
Remorse from power. And to speak truth of Caesar,
I have not known when his affections swayed
More than his reason. But &lquo;tis a common proof
That lowliness is young ambition’s ladder,
Whereto the climber-upward turns his face;
But when he once attains the upmost round,
He then unto the ladder turns his back,
Looks in the clouds, scorning the base degrees
By which he did ascend. So Caesar may.
Then lest he may, prevent. And since the quarrel
Will bear no colour for the thing he is,
Fashion it thus: that what he is, augmented,
Would run to these and these extremities;
And therefore think him as a serpent’s egg
Which, hatched, would as his kind grow mischievous,
And kill him in the shell.
Which quotations support the central idea that Brutus thinks Caesar is dangerous and needs to be killed before he becomes even more dangerous? Select three options.
A) “Fashion it thus: that what he is, augmented, / Would run to these and these extremities;”
B) “But 'tis a common proof / That lowliness is young ambition’s ladder”
C) “Th’ abuse of greatness is when it disjoins / Remorse from power.”
D) “And since the quarrel / Will bear no colour for the thing he is”
E) “And therefore think him as a serpent’s egg / Which, hatched, would as his kind grow mischievous, / And kill him in the shell.”
Answer
C, E and A
Explanation:
The quotations which support the central idea that Brutus thinks Caesar is dangerous and needs to be killed before he becomes even more dangerous are:
“Fashion it thus: that what he is, augmented, / Would run to these and these extremities;”“Th’ abuse of greatness is when it disjoins / Remorse from power.”“And therefore think him as a serpent’s egg / Which, hatched, would as his kind grow mischievous, / And kill him in the shell.”What are Supporting Details?This refers to the use of evidence in order to validate a claim to prove that it is true.
With this in mind, we can see that from the given text, an earlier claim is given about the reasons for Brutus's betrayal and this gives the details to why Brutus thinks Caesar is dangerous and needs to be killed
Read more about supporting details here:
https://brainly.com/question/884525
At the end of your citation in MLA
format, indicate what type of source
you are citing, such as
A. a book, the Web, a DVD, etc.
B. a musical, an opera, a rock concert, etc.
C. a hardback, a softback, a pamphlet, etc.
Answer: A
Explanation:
The humanities frequently employ the MLA (Modern Language Association) style, particularly when discussing language and literature in writing. Hence option A is correct .
What is MLA ?Brief parenthetical citations in the text that point to an alphabetical list of books cited at the end of the work are used in MLA style.
The list of sources used in the research study is found on the Works Cited page. It ought to be on a separate page at the end of the document. Without using quotation marks, centre the title "Works Cited" at the top of the page. Title the page "Work Cited" if only one source was used.
When writing a research paper in MLA format, there are two different ways to cite each source: in-text parenthetical citations that are brief and a comprehensive reference list (bibliography) at the conclusion.of your essay.
Here is a direct quote, please include an in-text citation with the author's name and page number at the end (Smith 8). "This is an exact quote" ("Trouble" 22). At the conclusion of your in-text citation, a period should appear outside of the brackets.
Learn more about MLA here
https://brainly.com/question/12053489
#SPJ2
1. What does the narrator, Squeaky, value as her two greatest traits (qualities)? Provide at least one quote as support.
Answer and Explanation:
Squeaky is the narrator in the short story "Raymond's Run", by Toni Cade Bambara. She is a confident young girl whose older brother, Raymond, is special.
Right in the beginning of the story, Squeaky reveals two traits she possesses of which she is proud of. First, she values her assertiveness in protecting Raymond from bullies:
"But now, if anybody has anything to say to Raymond, anything about his big head, they have to come by me. And I don't play the dozens or believe in standing around with somebody in my face doing a lot of talking."
Squeaky also values her athletic abilities. She is proud of being a fast runner, and quite a diligent one too:
"There is no track meet that I don't win the first place medal. [...] The big kids call me Mercury 'cause I'm the swiftest thing in the neighborhood."
A unique characteristic of a written text is that it,
A- requires readers to use their imagination
B- involves serious analysis
C- is longer than other mediums
D- tells the reader everything they need to know
Answer:
the answer is B
Explanation:
is that you Aiden?
Answer:
A
Explanation:
Written text has no visual or images so it requires reader to use their imaginations
PLEASE HELP WILL GIVE BRAINLIEST IF CORRECT
how do the underlined words affect the meaning of the excerpt?
a. they show how the statue brings out each Town person's personality
b. they suggest the happy prince statue actually is not very happy
c. they create an eerie atmosphere to Indicate the statue is haunted
d. they indicate that the town leader plans to steal the happy prince statue
Answer:
a
Explanation:
Answer:
a
Explanation:
Is this a thesis statement? A nationwide ban on plastic bags is the best way to protect marine wildlife from litter.
Answer:
Yes
Explanation:
A thesis statement is usually found at the end of the introduction to a body of writing that offers a summary.
Therefore, the statement: "A nationwide ban on plastic bags is the best way to protect marine wildlife from litter" is an example of a thesis statement.
Answer: Yes
Explanation: Because I got it right
10.
Is the following sentence true or false?
Lyric poems do not tell a story.
A. true
B. false
Answer:
true
Explanation:
AYUDAA¡!!!!!!!!!!!!!!!!!! DOY CORONA
Answer:
:)
Explanation:
Easy Question : What are some problems for watching too much tv?
(*In Your Own Words**)
Answer: Hello! In my own words, I would say that the main problem is decreased activity. Another possibly is possible eye strain after staring at the screen for long enough! You can avoid these by limiting the amount of screen time! Hope this helps!
Answer:
i agree with the answer above
Explanation:
Help me please please help me
Answer:
Explanation:
I imagine that life would be really hard. I would fry your brain because of the electricity and the blue LED lights. It would be very unhealthy for you. you would struggle with thinking any your eves and head would be strained and tired. you would be grateful for sleep.
what is "what"? plz tell me
Answer:
asking for information specifying something.
"what is your name?"
2.
the thing or things that (used in specifying something).
"what we need is a commitment"
determiner
1.
asking for information specifying something.
"what time is it?"
2.
(referring to the whole of an amount) whatever.
"he had been robbed of what little money he had"
adverb
What's a closing sentence or a transitional phrase?
Can you give me a few ideas???
The earth twitched;" is an example of...
Simile
Metaphor
Personification
Onomatopoeia
Answer:
personification
Explanation:
personfifcation is adding human like traits to something non human
Answer questions on the page
Answer: romio and juuliet die together
Explanation:
wen was big ben made.
What is an example of rhyme scheme in the road not taken by Robert frost
Answer:correct abaab
Explanation:
Speech on the factors causing internal and external conflicts and how to overcome them
Answer:
can you please repeat the question? i wanna help :)
Explanation:
In this argument in favor of recycling, which sentence introduces the counterargument?
A-By recycling and reusing the resources we have, we can preserve what untouched natural resources we have while extending the life of the resources we are currently using.
B-Admittedly, we cannot reuse or recycle all of the materials we use in our daily lives.
C-However, this is not an “all or nothing” scenario.
The correct answer is B, it introduces the counter argument by stating "we cannot reuse or recycle all the materials we use in our daily lives."
Answer:
B
Explanation:
This starts by saying the limitations on such "Admittedly, we cannot reuse..."