a particle of charge q is at point a , a distance ra from the center of a sphere of charge q . the particle is moved to point b , a distance rb from the center of the sphere. which of the following expressions represents the electric potential difference between the two points due to the charge on the sphere?
Answers
The expressions which represent the electric potential difference between the two points due to the charge on the sphere qQ/4πε0 (1/rb- 1/ra). (Option C)
The electric potential, also known as potential drop or the electrostatic potential refers to the amount of work energy required to move a unit of electric charge from a reference point to the specific point in an electric field. The electric potential generated from a point charge, Q, at a distance, r, from the location of Q is given by:
V= 1/4πε0 Q/r
When the electric potential is influenced by two point charge, Q and q, the formula is:
V= 1/4πε0 qQ/r
Electric potential difference refers to the external work required to bring a charge from one location to another location in an electric field. It is the change of potential energy experienced by a test charge that has a value of +1. The electric potential difference is given as ΔV = Vb - Va
Hence, the expressions which represent the electric potential difference between the two points due to the charge on the sphere qQ/4πε0 (1/rb- 1/ra).
Note: The question is incomplete as it is missing options which are A) Q/4πε0 (1/rb- 1/ra) B) 1/4πε0 Q/rb C) qQ/4πε0 (1/rb- 1/ra) D) 1/4πε0 qQ/rb
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Related Questions
Those trumpets belong to those men. They are
Answers
how trade and economics impacted Medieval Sub-Saharan Africa.
Answers
Sub-Saharan Africa relied heavily on trade at this time. They exchanged textiles and salt from the Desert and North Africa for gold and ivory from western Africa.
How did trade impact mediaeval society?
With each town specialising in a different crop and depending on the other for supply, trade between settlements sparked alliances. Once people started trading and could receive precisely what they needed without labouring as hard, the division between classes grew less obvious.
Cities grew as a result of the trade in western Africa. Over time, the rulers of these towns started to create a number of empires.
People were connected to the seaside by extensive commerce routes in the interior. They traded a variety of items, including those that were brought in from outside the area.
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Help help help help help help help please
Answers
Answer:
examples
Explanation:
what does a 'flat line' mean?
a. Horizonal
b. endless
c. no rise
d. none of the above
Answers
Answer:
Horizontal
Explanation:
Straight flag line
hhelp me please. I need good sentences
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Answer:
tools in the media are constantly evolving due to changes and further developments in modern technology
It has been said by the national report that the majority of citizens that cannot read or write are located away from major cities in the country.
It is believed by scientists that copious amounts of oil and gas can quite possibly harm the environment.
many complaints about their level or lack thereof costumer service was given to the company
a fake story was published by the newspaper, so the editor was forced to resign
due to not enough work on farms in rural areas people end up moving to big cities to find work.
Explanation:
hope this helps! and that i'm not to late.
Having went to the store to buy food for dinner is it a fragment or a run on
Answers
Answer: Fragment
"Having went to the store to buy food for dinner" is not a complete sentence. This sentence needs something at the beginning, such as "She was on her way home, having went to the store to buy food for dinner."
*Note: "gone" would have better suited this sentence and been more grammatically correct as opposed to "went."
The element that the phrase "having went to the store to buy food" demonstrate would be:
- A fragment
What is a fragment?
A fragment is described as the element of a sentence that has been broken off from the main sentence. This makes it incomplete and communicates an unclear meaning due to the lack of the rest of the elements. The given phrase 'Having...food' exemplifies a fragment because it misses the subject and the main verb to accomplish its sense.Thus, 'fragment' is the correct answer.
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Refer to the News Wire to answer two questions.
NEWS WIRE: FISCAL RESTRAINT
Retailers Bracing for Spending Slowdown
Retailers across the country are bracing for an anticipated slowdown in consumer spending. As of January 1, the Social Security payroll tax rate moved back up from 4.2 percent to 6.2 percent. That will reduce take-home pay by about 2 percent. That means that the 153 million workers in this country will have an average of $1,500 less to spend this year. For retailers, that implies less spending on groceries, household goods, and dining out. According to an estimate by Citigroup, the jump in the payroll tax will leave $110 billion less in consumers' pockets. That has retailers worried.
Source: News accounts of January 2013.
If the MPC was 0.75, and using the Citigroup estimate,
Instructions: Round your responses to one decimal place.
how much did consumer spending decline initially in response to the 2013 payroll tax hike?
$
82.5
billion
what was the ultimate decline in aggregate demand after all multiplier effects?
$
billion
Answers
The consumer spending initially declined by $82.5 billion.
The ultimate decline in aggregate demand, considering the multiplier effects, is $330 billion
To calculate the initial decline in consumer spending in response to the 2013 payroll tax hike, we need to use the MPC (Marginal Propensity to Consume) and the estimate provided by Citigroup.
Initial decline in consumer spending:
The MPC represents the portion of additional income that individuals choose to spend rather than save. In this case, the MPC is 0.75.
According to the Citigroup estimate, the payroll tax hike left $110 billion less in consumers' pockets. To calculate the initial decline in consumer spending, we multiply this amount by the MPC:
Initial decline = MPC × Citigroup estimate
Initial decline = 0.75 × $110 billion
Initial decline = $82.5 billion
Therefore, the consumer spending initially declined by approximately $82.5 billion.
Ultimate decline in aggregate demand:
The multiplier effect refers to how changes in spending can have a broader impact on the economy. The formula to calculate the ultimate decline in aggregate demand is:
Ultimate decline = Initial decline / (1 - MPC)
Using the initial decline value calculated in the previous step:
Ultimate decline = $82.5 billion / (1 - 0.75)
Ultimate decline ≈ $82.5 billion / 0.25
Ultimate decline ≈ $330 billion
Thus, considering the multiplier effects, the ultimate decline in aggregate demand is approximately $330 billion.
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Who is narrating the story in “How Mighty Kate Stopped the Train”?
A.
Kate is narrating her own story and exaggerating her heroic deeds.
B.
Kate's mother is narrating the story and bragging on her daughter.
C.
A person outside the story who dislikes Kate is narrating the story.
D.
A person outside the story who admires Kate is narrating the story.
Answers
Answer:
d
Explanation:
I not to sure but I think it's d
How Mighty Kate Stopped the Train is narrated by:
Option D
A person outside the story who admires Kate is narrating the story.How Mighty Kate Stopped the Train:How did Kate stop the train in which she shouted at the engineer to stop. She whistled boisterously, so noisily that the engineer heard it. She remained before the train and halted it with her hands.
A pleasant fictionalized account based on a genuine occasion which occurred in 1881. A youthful Kate Shelley saw the collapse of a train span during a raging tempest and had to walk a mile down the tracks and over another brace scaffold to warn the station master to stop the following train which was already barreling towards disaster.
Kate shelley, run remained on a slope above Honey Creek and the railroad line that prompted Moingona, Iowa. All her life Kate had heard the surge of water and the whistle of trains.
All her life she had watched the Chicago and Northwestern Railway cars and heard the hissing, black steam engines clack-clattering over Honey Creek Bridge.
Each train had a number and a whistle. At the point when Kate's pa was alive, he had taught her to perceive each train engine by its whistle. He'd been a part foreman for the Chicago and Northwestern until his death three years earlier in a railroad accident. After that, Kate and her mother took care of the animals, planted the garden, and sent the little ones off to school.
The narration was done as a third person so the correct answer is option C.
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What specific issues does Swift address in each land, and what do these criticisms reveal about Swift's views on society and politics?
Answers
Swift highlights the extreme poverty prevalent in Ireland and suggests that the impoverished population, particularly the children, could be a valuable commodity.
How to explain the informationBy proposing that they be sold as food to the wealthy, he draws attention to the dire economic conditions and the exploitation of the poor. This critique reveals Swift's view that society and politics have failed to address the root causes of poverty and inequality.
Swift criticizes the high birth rate in Ireland, which exacerbates the poverty problem. By suggesting a drastic solution involving the consumption of infants, he highlights the need for effective family planning and population control. Swift's view on society and politics is that they have not adequately addressed the issue of overpopulation and its impact on social and economic welfare.
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In paragraph 5, what does the author reveal by comparing the way men and women are represented in history books?
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A Room of its Own by Virginia Woolf is a key work in the history of women's activism. Through a unique and highly interesting examination of the psychological and material conditions anticipated for creation of literature, it looks at the historical context of women writers.
Is writing a job?The work of authors and journalists is anticipated to increase by 4% between 2021 and 2031, which is approximately average over all occupations. Over the next ten years, there are expected to be, on average, 15,200 opportunities for writers and authors.
How does an author differ from a writer?A poet is a person whose works have been published. When someone writes, they are considered writers since they develop the ideas and content for their published works as well. Since most authors also write, not all journalists may claim to be authors.
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As soon as the war was over,the refugees _______ to go back to the villages they _____ about five years earlier.A.tried/had left B.had tried/left C.have tried/were left D.were tried/have left
Answers
The sentence that would make the most grammatical sense would be "As soon as the war was over, the refugees tried to go back to the villages they had left about five years earlier." Thus, the answer would be A. tried/had left
The correct answer is A. tried/had left.
Explanation:The correct answer to the question is A. tried/had left.
In the sentence, the word 'refugees' is the subject. The refugees 'tried' to go back to the villages they 'had left' about five years earlier. The past perfect tense 'had left' is used to indicate that the action of leaving the villages occurred before the action of trying to go back.
The correct answer to the question is A. 'tried/had left'. This is due to the time sequence of events mentioned. First, the refugees left their villages around five years ago: 'they had left'. This is a finished action that occurred before another past action, hence, the past perfect tense 'had left' is used here. Then, after the war was over, they tried to go back: 'they tried'. Here, the past simple 'tried' is used as this happened after they had left their villages.
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what figurative language is this phrase
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Answer:
Figurative language is phrasing that goes beyond the literal meaning of words to get a message or point across
5. Which statement best summarizes a central idea of "Eating Your Words?
A. Newspaper columnists sometime create new words for common things.
B. People in different places have many names for a sandwich.
C. The words people use are connected to a certain time and place.
D. Some words become popular because they are easy to say.
Answers
The statement that best summarizes the central idea of "Eating your words" is:
C. The words people use are connected to a certain time and place.
What is the explanation for the above response?The central idea of the passage "Eating Your Words" is that the words people use are connected to a certain time and place. The article discusses how different regions and cultures have their own unique words for certain foods, highlighting the way language reflects local traditions and customs.
The other options presented in the question - creating new words, the many names for a sandwich, and popularity of words due to ease of pronunciation - are all mentioned in the article, but they are not the main idea or focus of the passage.
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If you could give yourself an award, what would the award be for?
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a cold greeting by ambrose bierce
how does the authors use of foreshadowing impact the order of events in the story?
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Bierce liked to tell a story through a series of events, even if it disturbed the reader. Bierce's story is heavily reliant on the sudden realization that Farquhar was not, in fact, on the run, but that he had been hung.
Bierce’s use of “an occurrence at owl creek bridge” hints at the distance between reality and fantasy that becomes increasingly apparent as the story progresses.
Foreshadowing can be used for a variety of reasons, but the most common is to create or enhance narrative tension or tension. Foreshadowing is often used at the end of a chapter or section, which is why it is a common element in suspenseful genres such as Gothic novels and horror movies.
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Identify the subject in the sentence, "Each of the students speaks good English." a. The students b. Each of the students c. Speaks d. English
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The phrase "Each of the students speaks good English" has "Each of the students" as the subject. This is so because the statement mentions how well-spoken English each student possesses.
The activity that the subject is performing is indicated by the word "speaks" in the sentence. The language that the pupils are speaking—"English"—is the sentence's object. Because it identifies the person carrying out the activity, the subject of the phrase is crucial.
The fact that "Each of the Students" is used as the subject in this phrase emphasises how well-spoken English is being used by all of the pupils. The word "each of" is used to emphasise the communal aspect of the action being taken, which serves to further support this.
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The fable always explicitly states a moral truth. The fairy tale, in contrast, leaves all decisions about meaning up to
us, whether we wish to make any application to our life or simply to enjoy the fantastic events it tells about.
According to the passage, a fable differs from a fairy tale in that a fable has
А a happy ending
B
an ethical meaning.
С
a complicated plot.
D
unusual events taking place.
Answers
Answer:
(B) An ethical meaning
How is Judy Jones like an opiate?
O She's addictive rather than restorative
O She's healing
O She's dangerous and caustic
O She's therapeutic rather than aging
Answers
Judy Jones like an opiate because She's addictive rather than restorative. option A
How Judy Jones like an opiate?Comparing Judy Jones to an opiate implies that she has addictive qualities, captivating the narrator and drawing him into her allure. Opiates are substances that can create a strong physical and psychological dependency. In the context of the story, "Judy Jones" refers to a character from F. Scott Fitzgerald's short story "Winter Dreams."
Throughout the story, the narrator, Dexter Green, becomes infatuated with Judy Jones and is unable to break free from his attraction to her. Just as an opiate can have an addictive hold on a person, Judy Jones has a powerful and addictive effect on the narrator.
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Harish met an European lady in a market last week. Harish met a European lady in the market last week. Rewrite these sentences correctly.
Answers
Harsh met an European lady last week in a market.
O A. The powers of government should be divided. • B. The government should protect the rights of its citizens. • C. The power of government should be limited. O D. Natural rights cannot be given or taken away.
Answers
Answer: D. Natural rights cannot be given or taken away.
HELP PLEASE!! It’s American Literature!
Answers
The line from the poem that leaves readers wondering how the speaker better understands her father and his care for his family is A. "then with cracked hands that ached"
What is a Poem?This refers to the collection of lines that expresses the thoughts and emotions of a poem in stanzas.
Hence, we can see that from the given poem, there is the use of narration by the poet to show a description of her father and how much he cared for his family and this is shown in option A.
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2.) Who is the "Almighty" and
what were the songs about that
were being sung?
Answers
Answer:Donnie" McClurkin
Explanation:All I want to do is to reach people," McClurkin declared. "Today, I'm not an American, I'm a Jamaican." Dressed in blue denim pants and black T-shirt with the writing 'Alive on Purpose', McClurkin said ministry is more than just bringing the Gospel to people and more about meeting the needs of the people.
Read the excerpt from Mandela’s Inaugural Address.
Never, never and never again shall it be that this beautiful land will again experience the oppression of one by another and suffer the indignity of being the skunk of the world.
The sun shall never set on so glorious a human achievement.
Let freedom reign.
God bless Africa!
Who is his primary audience here?
A.
world and African diplomats
B.
all Africans
C.
world leaders
D.
South Africans
E.
world nations
Answers
Answer:
i think it's D
Explanation:
i hope it's helpssss
What type of logical fallacy is the following example?
Jake: I disagree with the candidate's views on gun control.
Ben: Wow! I didn't realize you were a fascist who wanted to take away all of our rights!
Answers
Answer:
Ad Hominem
Explanation:
Please explain how nonfiction writing differs from creative nonfiction writing.[Please help]
Answers
how many states are in the United States who is the president of the United States? Hi there, how are you
Answers
Answer:
There is 50 states in total,our current president is Joe biden our 46th by far.
I'm doing pretty good thanks for asking.
Explanation:
I think it's correct if not sorry
If a pregnant woman gives birth to two babies; the first one comes out at 11:54 PM of December 31st 2018, the second at 12:03 AM of January 1st 2019
Answers
Answer:
What's the question if the question is are they twins we can say yes they are twins but more of Irish twins
i want to make a passive voice of
"Change the Voice"
Answers
Answer:
Explanation:
Let the voice be changed.
Passage (T) What happens in our brains when we read? (2) As one would expect, the parts of the brain associated with language development and processing play a central role (3) But recent research by neuroscientists suggests that the words and phrases we encounter when reading stones activate many other parts of our brains as well, including those responsible for smell, touch, metion and even empathy (4) In one study, researchers asked participants to read words and have them scanned by a brain imaging machine (5) Brain imaging machines are also used to detect the effects of tumors. stroke, head and brain injury, or diseases such as Alzheimer's (6) When subjects locked at words such as "perfume," their primary alfactory cortex, the region used for smells, lit up, when they saw words such as "chair," this region remained dark. (7) In another study, metaphors involving texture, such as The singer had a velvet voice." roused the sensory cortex, while phrases such as The singer had a pleasing voice" did not (8) The sensory cortex is the part of the brain responsible for perceiving texture through touch. (9) In a third study, sentences like "Pablo kicked the ball" caused brain activity in the motor cortex, which coordinates the body's movements. (10) This activity as concentrated in different parts of the motor cortex depending on whether the movement was arm- related or leg-related (11) The idea that reading activates parts of the brain associated with "real life" functions goes beyond simple words and phrases: there is evidence that the brain treats the detailed interactions among characters in a book as something like real-life social encounters (12) One scientist has proposed a reason: reading produces a vivid simulation of reality, one that runs on minds of readers just as computer simulations run on computers." (13) The brain, it seems, does not make much of a distinction between reading about an experience and encountering it in real life. Question Which sentence provides unnecessary information and should be deleted from the second paragraph (sentences 4-10)? Sentence 4 Sentence 5 Sentence 6 Sentence 9
Answers
Sentence 5 is the one that provides unnecessary information and should be deleted from the second paragraph (sentences 4-10).
Sentence 5 is: "Brain imaging machines are also used to detect the effects of tumors, stroke, head and brain injury, or diseases such as Alzheimer's".
This sentence is unrelated to the main idea of the paragraph, which is about the role different parts of the brain play in processing language when we read.
It is a piece of information that may be useful but it is not necessary for the explanation provided in the paragraph.
Thus, it can be deleted without affecting the overall meaning of the passage.
Therefore, the correct answer is Sentence 5 is the one that provides unnecessary information and should be deleted from the second paragraph (sentences 4-10).
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Read the excerpt from "Opening Ceremonies of the New York and Brooklyn Bridge" by Hon. Seth Low, Mayor of the City of Brooklyn.
In the course of the construction of the Bridge a number of lives have been lost. Does it not sometimes seem as though every work of enduring value, in the material as in the moral world, must needs be purchased at the cost of human life? Let us recall with kindness at this hour the work of those who labored here faithfully unto the death, no less than of that great army of men who have wrought, year in and year out, to execute the great design. Let us give our meed of praise to-day to the humblest workman who has here done his duty well, no less than to the great engineer who told him what to do.
Which of the following best summarizes the central idea of this excerpt?
The mayor gently lectures on the importance of speaking kindly about those who have died.
The mayor commemorates and gives praise to those who were killed while building the bridge.
Low gives a monotonous explanation of the costs of the materials that were purchased for the bridge.
Low remembers those humble men who labored intensely and faithfully to execute this dream.
Answers
Answer: The mayor commemorates and gives praise to those who were killed while building the bridge.
Explanation:
The option that best summarizes the central idea of this excerpt is option B "The mayor commemorates and gives praise to those who were killed while building the bridge".
This can be seen in the excerpt when the Mayor of the city of Brooklyn said they should recall with kindness the work of the people who contributed to the building of the bridge but had died.
Therefore, the correct option is B.
Answer:
it Is B
Explanation: