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nanakiriya
nanakiriya
25.01.2020 19:07 •  Другие предметы

David Copperfield was David said: "I'm David Copperfield,
Copperfield His father died before he Miss Trotwood took David inside, gave
born in a village in England your nephew". He told her everything
was born David's mother him a hot water bath and some food.
looked after him well. He As days went by, Miss Trotwood put
went to the best school in David in a good school and looked after
the village
him well. Miss Trotwood had a friend,
When David was six years Wickerden and his daughter Agnes
old, his mother married David and Agnes became great friends
a man by the name of Wickerden was a rich man but his
Murdstone. Murdstone did assistant, Micawber, was a bad man. He
not like David and David got a very important document and he
did not like him. Murdstone decided to take Wickerden's money.
decided to send David to a boarding David often visited Wickerden's house.
school. Next day he left his mother and One day David saw some of Wickerden's
went to live there.
papers. He did not believe Micawber and
He was in boarding school for asked to see the documents. Micawber
two years. Then he heard about his said: "David, these papers are about
mother's death. He went home, there work and they are not important". But,
he found Murdstone sitting on a chair. David understood that Micawber had a
He looked at David and said: "Your mo- bad plan against Wickerden. He went
ther is dead. I have no money for your to the police and told everything. The
education. You must start working police took Micawber and put him into
Tomorrow you will leave for London." prison.
So, at the age of ten, David Copper Wickerden was happy that David
held was in London streets without saved his money and house. Agnes too
money, food or home. He remembered thanked David for her father.
his mother told him that in Dover lived A few years later David and Agnes,
his aunt, his father's sister. David never who were in love with each other, got
saw her. He walked to Dover to his aunt's married. They lived happily for a long
house
time.
It was morning when David came to
his aunt's house. Her name was Miss
Trotwood. She was in the garden, when
she saw a poor boy looking at her.
She asked: "What is it boy? What do
you want?
надо переводить мне надо шклууу умаля


David Copperfield was David said: I'm David Copperfield,Copperfield His father died before he Miss

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Ответ:

ответ: Светимость Денеба  ≈ 80020 светимостей Солнца.

Объяснение: Дано:

Видимая звездная величина Денеба m = 1,25;

Расстояние до Денеба Sсв = 1640 световых лет.

Найти светимость звезды  Ед - ?

Вначале найдем абсолютную звездную величину (М) Денеба:

М = m + 5 - 5lgS,  здесь m  - видимая звездная величина звезды = 1,25m;  S – расстояние до звезды в парсеках (пк).

1 пк = 3,2616 световых года, следовательно, расстояние до звезды в пк  Sпк = Sсв/3,2616 = 1640/3,2616 ≈ 503 пк.  

Тогда М = 1,25 + 5 – 5lg503 = 1,25 + 5 – 5(2,7…) ≈ –7,258 m.

Теперь можно найти светимость звезды Денеб в светимостях Солнца.

Ед = (100^0,2)^(5-M) = 2,511886^(5+7,258) = 2,511886^12,258  ≈ 80020 светимостей Солнца.

4,4(27 оценок)
Ответ:
Yulia2107
Yulia2107
25.01.2020

Объяснение:

Пасте́р (фр. Louis Pasteur, французское произношение: [lwi pastœʁ][1]Луи [Прим. 1]; 27 декабря 1822, Доль, департамент Юра — 28 сентября 1895, шато Вильнёв-л’Этан близ Гарша)[3] — французский химик и микробиолог, член Французской академии («бессмертных»; 1881). Пастер, показав микробиологическую сущность брожения и многих болезней животных и человека, стал одним из основоположников микробиологии, создателем научных основ вакцинации и вакцин против сибирской язвы, куриной холеры и бешенства. Его работы в области строения кристаллов и явления поляризации легли в основу стереохимии[4]. Также Пастер поставил точку в многовековом споре о самозарождении некоторых форм жизни в настоящее время, опытным путём доказав невозможность этого. Его имя широко известно благодаря созданной им и названной позже в его честь технологии пастеризации.

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