Answer:In 240 BC, how did Eratosthenes calculate the size of the earth? Using simple trigonometry, we compared whether daylight could reach water in water wells in two cities at different latitudes. The earth's system to set and a line that connects the globe to the sun are perpindicular on the spring equinox.
Explanation:
In 240 B.C., the Greek astronomer Eratosthenes made the first good measurement of the size of Earth. By noting the angles of shadows in two cities on the Summer Solstice, and by performing the right calculations using his knowledge of geometry and the distance between the cities, Eratosthenes was able to make a remarkably accurate calculation of the circumference of Earth. Let's take a closer look at how he did it!
Eratosthenes lived in the city of Alexandria, near the mouth of the Nile River by the Mediterranean coast, in northern Egypt. He knew that on a certain day each year, the Summer Solstice, in the town of Syene in southern Egypt, there was no shadow at the bottom of a well. He realized that this meant the Sun was directly overhead in Syene at noon on that day each year.
Eratosthenes knew that the Sun was never directly overhead, even on the Summer Solstice, in his home city of Alexandria, which is further north than Syene. He realized that he could determine how far away from directly overhead the Sun was in Alexandria by measuring the angle formed by a shadow from a vertical object. He measured the length of the shadow of a tall tower in Alexandria, and used simple geometry to calculate the angle between the shadow and the vertical tower. This angle turned out to be about 7.2 degrees.
why does the author say yawning is contagious
Answer:
because a lot of times when 1 person yawns most people around them do
Explanation:
The author says yawning is contagious because People yawn after seeing others yawn.
Who is the author?A literary work's creator (such as a book) a well-known author is someone who makes or originates anything, such as a software developer or a screenwriter. A writer is someone whose writing has been made public. People who write are considered writers when they create the concepts and content of their writing.
One study found that yawning is six times more likely to occur after witnessing someone else yawn. Regarding the spread of yawns, Giordano suggested that it might be connected to a process known as social mirroring, in which living things imitate the behaviors of others.
Therefore, Thus option (C) is correct.
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does the welland canal have locks? how do u know?
Answer:8 locks along the canal with 7 located in the northern half
Explanation:
he Welland Canal connects Lake Ontario (at Port Weller) to Lake Erie (at Port Colbourne). The canal is 26 mi/42 km in length. The present canal is the fourth one to be constructed. There are
Help me please What regions of Afroeurasia were directly linked by the Silk Road around 300 C.E.?
0
Select all correct answers.
India
O Middle East
China
Europe
The area, which is directly linked by the Silk Road around 300 C.E were china to Europe and Middle East. Thus option second, third and fourth are correct.
What was the silk route?The silk route was the ancient passage meant for the trading activity that connected China with the West, moving commodities and ideas between Rome and China.
Wool, gold, and silver migrated east, while silk traveled west. Nestorian Christianity and Buddhism were also transported to China through the Silk Road from India.
It is a historic economic network that connected China and the Far East to Europe and the Middle East. The route had a number of trade facilities and markets that assisted in goods storage, transit, and exchange. It was also known as the Silk Road.
Therefore, it can be concluded that option second, third and fourth are correct.
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help me find this question
Answer: I think it's C
Explanation:
There's no mention of slavery or the Women's Suffrage Movement, and from analyzing the text you can tell that it's about government.
when did the starbucks reserve roastery in chicago open
Answer: Nov 15, 2019
Explanation:
smaller scale paintings of middle-class interiors were typical in which country during the renaissance?
The French painters used the smaller scale paintings of middle-class interiors during the renaissance period.
The smaller scale painting are called the miniatures painting and the painting technique was introduced in France in 17th century which was perfected by Jean Petito.
Miniature paintings includes colorful handmade paintings which are very small in size.
The outstanding features of the painting is the use of intricate brushwork which contributes to their unique identity.
Therefore, the French painters used the smaller scale painting of middle-class interiors during the renaissance period.
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what of the following characterized ghana after 1992?
Answer: Advances in education and human services.
Explanation:
WILL MARK BRAINLIEST!!!!
What events caused the disunity of Italy again?
Answer:
The revolutions of 1848 ignited nationalist sentiment throughout the Italian peninsula. The Franco-Austrian War of 1859 was the agent that began the physical process of Italian unification. The Austrians were defeated by the French and Piedmont at Magenta and Solferino, and thus relinquished Lombardy.
Explanation:
True or false the father reaches of a country settlement are called a buffer
Answer:
Meaning of Buffer
Explanation:
buff·er
/ˈbəfər/
noun
a person or thing that prevents incompatible or antagonistic people or things from coming into contact with or harming each other.
"family and friends can provide a buffer against stress"
synonyms: cushion, bulwark, shield, screen, barrier, guard, safeguard, hedge, shock absorber, armor, intermediary, middleman, go-between
a solution that resists changes in pH when acid or alkali is added to it. Buffers typically involve a weak acid or alkali together with one of its salts.
a temporary memory area in which data is stored while it is being processed or transferred, especially one used while streaming video or downloading audio.
"print speed is boosted by pages being formatted in a buffer while another is printing"
verb
lessen or moderate the impact of (something).
"the massage helped to buffer the strain"
synonyms: cushion, absorb, soften, lessen, diminish, moderate, mitigate, allay, deaden, muffle, stifle, shield
treat with a chemical buffer.
"add organic matter to buffer the resulting alkalinity"
store (data) in a buffer while it is being processed or transferred.
"try buffering as much of the video stream as you can before you hit the 'play' button"
Definitely its False
How would you describe a third party today?
707/36 estimated in two ways
19.638
38 is reapeating
and 19 23/26
Which statement is an idea in the Declaration of Independence?
Answer:
The Declaration of Independence included these three major ideas: People have certain Inalienable Rights including Life, Liberty and Pursuit of Happiness. All Men are created equal. Individuals have a civic duty to defend these rights for themselves and others.
austria hungary took over this balkan state in 1908
Answer:
took over Bosnia and Herzegovina in 1908
Explanation:
The annexation of Bosnia and Herzegovina by Austria-Hungary in October, 1908.
2. Explain Thomas Hobbes' point of view concerning the rights of man.
Answer:
He argued that the essential natural (human) right was “to use his own power, as he will himself for the preservation of his own Nature that is to say of his own Life"
Explanation:
which amendment decided that a person could be president for only two terms
Answer: the 22nd amendment did
Explanation: it says "No person shall be elected to the office of the President more than twice, and no person who has held the office of President, or acted as President, for more than two years of a term to which some other person was elected President shall be elected to the office of the President more than once."
Why did the Assyrians borrow from other cultures in the creation and development of their empire ?give at least two reasons
DESPERATE WILL GIVE BRAINLIST AND THANKS FOR THE CORRECT ANSWER!!!!
Which of the following is the BEST definition of the Social Gospel movement?
A.It was the belief that if everyone converted to Christianity then problems would disappear.
B.It is the idea that the strongest businesses would thrive while the weak would not, much like "survival of the fittest" in nature.
C.It was a Christian's duty to improve society and help the poor and people in need.
D.Socialism should be implemented to help the poorest members of society.
what is the longest an astronaut has stayed in space
Answer: 437 Days
Explanation: Valeri Polyakov spent 437 days on the Mir space station from 1994 and 1995 .
Prior to becoming President of the U.S., Herbert Hoover ______
Answer:
Hoover would serve as secretary of commerce from 1921 to 1929 under Harding
Explanation:
What is something that prevents people from voting in elections?
Answer:
Explanation:
Abstention is a term in election procedure for when a participant in a vote either does not go to vote (on election day) or, in parliamentary procedure, is present during the vote, but does not cast a ballot. ... White votes, however, may be counted in the total of votes, depending on the legislation.
Why were the Europeans interested in colonizing east africa
Answer:
ano ba answer jan pakopya thanks
Which was a political benefit of British rule in India?
freedom of speech
loans for railways
resuscitation of India’s noble literature
telegraphs
Answer: B.) Loans for Railways
Explanation:
What did the Druids build to honor Samhain?
Answer:
To celebrate Samhain the Druids built huge sacred bonfires. People brought harvest food and sacrificed animals to share a communal dinner in celebration of the festival. During the celebration the Celts wore costumes - usually animal heads and skins. They would also try and tell each other's fortunes
Explanation:
explanation
What do most colonists think about the Stanp act?
Answer: The American colonists were angered by the Stamp Act and quickly acted to oppose it. Because of the colonies' sheer distance from London, the epicenter of British politics, a direct appeal to Parliament was almost impossible. Instead, the colonists made clear their opposition by simply refusing to pay the tax.
Explanation:
Why is it hard for Single Issue minor parties to gain support?
Answer:
Because adults or older people look down on minors/kids due to the fact that they are younger then them and they see them as weak and all of the above. So due to that when a minor needs affection or support in general form time to time they may act fake or put a fake face on. So for example you may see minor who made a channel like TommyInnit, Ran boo, and Tubbo they didn't get help starting there channels now tommy has 11 millions followers, Tubbo has 2 million followers, and has more on streaming site, same with Ranboo he has 2 million and much much more on twitch. So, thats a little message for any minors to never give up.
2. What was the
purpose of intendants?
Answer: Intendants purpose was to be responsible for supplies, finances, etc. on the battle field.
Explanation: I hope this helps :) You've got this!
Which of the following is not a potential problem of using more nuclear
energy?
O A. Most nuclear plants can only operate for 30 - 40 years.
B. Cost to build a nuclear plant is very high
C. Spent nuclear fuel is dangerous if handled wrong
D. The cost of nuclear fuel is very low
Answer:
a
Explanation:
just beacuse i know tis A
Answer:
The cost of nuclear fuel is very low
What is Caribbean government like????
Answer:
I don't know much about it but I do know that its a parliamentary democracy
Explanation:
Explain the journalistic style of Mark
Answer:
It's kind of hard without know what mark your taliking about
Explanation:
13. Immigrants experienced all of the following when they arrived in America EXCEPT
Help please