How do children learn about the differences between what they see and what other people see?

It's difficult to tell from your question if you mean what
they physically are able to see, their perceptions of reality vs. those of adults or how
the role of imagination and mental immaturity affect their
perceptions.

I can modify this answer if you specify more
directly what you are looking for.

My sense of the
psychology and physiology of this comparison is that children lack the ability to reason
at an adult level, the ability to completely care for themselves, a lack of vocabulary
to attach to their senses, and are in the beginning and middle of the socialization
process.

So I would think children learn how to interpret
what they see over time as society, their parents and family teach them how to perceive
what they are seeing.  A child who sees another child hitting someone might think it's
funny at first, until they are taught that violence is wrong.  This takes time and
repeated conditioning, and as a child's brain and education begin to mature, the
socialization accelerates.

Height of building?What should the height of a building be so that a ladder which is 80 m long and is placed 60 m away from the building forms an...

From the information in the question we know that the
ladder is placed 60 meters away from the building, it is 80m long and the angle that is
has to form with the building should be less than 60
degrees.

Now, we assume that the building is a vertical
structure.

Therefore a right angled triangle is formed with
between the ground, the building and the ladder, with the ladder acting as the
hypotenuse. As the angle formed by the ladder and the ground should be less than 60
degrees, let’s take the extreme case of 60 degrees. When this is the case we see that
sin 30 = height of the building/ length of the ladder =   sqrt 3
/2

=> height of the building = (sqrt
3/2)*80

=> height of the building = 69.28
m

The angle for any height more than 69.28 m exceeds 60
degree.

Therefore the required height of the
building cannot exceed 69.28 m.

In Shakespeare's Macbeth, how can I compare Macbeth to Macduff?

This is a good question. Shakespeare's Macbeth
is a tragedy, and it follows the rise and fall of the title character. 
Macbeth's antithesis (opposite) in nearly every way is Macduff; yet, there are several
points of comparison which you can effectively
support.

First, they are both loyal to their king, Duncan. 
When we meet Macbeth, he is fighting valiantly for the cause of his king and was
rewarded for it.  Duncan felt safe enough to trust Macbeth as his host, as well--much to
his peril.  We know Macduff is a trusted nobleman because he was given the task of
waking Duncan in the morning--when the king was at his most
vulnerable.

Both men are passionate for a cause and willing
to kill for it.  Macbeth killed as a soldier and murdered as a king; Macduff was
motivated by both love of country and revenge for his murdered family to kill the
usurper king Macbeth.

Despite their many differences,
Macbeth and Macduff do have some common characteristics. 

In Susan Glaspell's one-act play, Trifles, how do we access knowledge about the Wright's married life?

I edited your question to make it into one question,
instead of two.

We know about the Wright's married life
from the words of Mrs. Hale. We know that they had been married 30 years, and that
Minnie was a totally different person prior to get married. She used to sing, and make
herself pretty clothes. After marrying Mr. Wright, Minnie Foster (now Mrs. Wright) was
isolated from the rest of the world. First, we know that they moved into a hollow away
from the others. We also know that they were even incommunicado, since Mr. Wright refuse
to share a common phone line.

It seems like Minnie began to
implode, according to Mrs. Hale, who knew her prior, because she quit singing, her
clothes were shabby, and the coldness of her husband's character is evident in the lack
of interest Minnie had placed in a home grown as cold as the marriage. The canary was
the boiling point where Minnie snapped, obviously, and that's when she did to her
husband what he did to her bird.

What is the central question in Joseph Conrad's Heart of Darkness?

I am sure you will get several ideas on this one, but one
central question that comes to mind for me as I consider the themes of good, evil, truth
and morality is, "Can man change?" More specifically, I wonder if man can go from bad to
good. It seems easy to move in the other direction throughout history, but this
direction is much, much harder to come by.

This is
complicated by the unreliability of the narrator. If the narrator weren't tainted and if
we could trust each perception, coming to a better conclusion on your question would be
easy. Perhaps though, that is part of what contributes to the question of change for the
better.

What accounts for the dreamlike quality of the White City? What are the positive and negative aspects of this dream?PLease help me this is my...

Great Question--I know that when my students read this
book, they get lost in the first third of the book which focuses on the design of
Chicago for the fair because they are more interested in the story of the serial killer
Holmes.  While I certainly understand that, it is important to read the book with the
mindset that Larson pairs the two tales to discuss related truths about the White
City.

The positive aspect of the White City's dreamlike
quality is that it attracted a myriad of new visitors, American and foreign, to Chicago
and established a more cultured reputation for the hard-working city (at least for a
while).  The dreamlike quality which many of the visitors found so appealing stemmed
from the architects' decision to build facades which made parts of the city appear to be
constructed of white marble--it was a shining city on the lake (of sorts).  Because it
would have been too expensive and time consuming to rebuild or build new buildings out
of marble, the white facades made it possible for the designers to give Chicago the
appearace of opulence and elegance.

From a negative
standpoint, many newcomers who migrated to the city had heard only of the magnificent
white city and the many jobs available because of the upcoming fair.  The dreamlike
quality drew those naive Americans and foreigners to the city, but unfortunately, they
soon realized that it was all a facade--that life was rough and hurried in the city and
not what they had expected.  This is when Larson introduces Holmes's story.  Holmes
represents the underlying nightmare or seediness of the city, hidden from the view of
unspecting innocents who are drawn in by the city's glow. The architects and engineers
who designed the White City had no idea that they were providing criminals and murderers
with the perfect cover to carry out their ill will.

How does Shakespeare use plot to explore an issue that still has meaning today?This is for the tragedy Romeo & Juliet. You need to discuss the...

Most people would tell you that the play, Romeo
and Juliet, is a tragic love story and I would agree.  It is also a microcosm
of hatred and the violent result of teaching hatred.  We are given no reason for the
feud.  Do any of the people involved in this feud know the reason?  All of Verona is
affected one way or another by the insanity of the
feud.

Several years ago in Jerusalem there was production
of Romeo and Juliet. The Montagues were played by Palestinians and
the Capulets by Israelis.  What better way to demonstrate the results of groups of
people fighting and killing each for reasons of religion or nationality or any number of
things we as human beings find to fight about.

For both of
these young people, their world is so intolerable that they commit suicide to escape the
hatred and violence.