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Рыбак, сидя в лодке, отталкивается от бревна, которое при этом начинает двигаться со скоростью 2 м/с. Какую скорость при этом приобретает лодка, если ее масса вместе с рыбаком в 4 раза больше массы бревна. Правильно ли решена задача?
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Предмет:
Математика -
Автор:
zaidenschmitt - 6 лет назад
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Ответы 2
Еще вопросы
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8.2. Определить значение переменной f после выполнения следующих фрагментов программы:
Var f : real ; i : integer;
f: = 1; i: =2;
while i > 1 do begin
f: = f + 1 / i;
i : = i -1;
end;
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Предмет:
Информатика -
Автор:
vicentamack - 6 лет назад
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Ответов:
1 -
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познач речення в якому дієслово вжите в переносному значенні.
а)грак неквапом злетів на асфальт
б)я стояв на балконі
в)горобці й синиці ображено залементували-
Предмет:
Українська мова -
Автор:
addiegarcia - 6 лет назад
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1 -
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Перевод текста.
First there was a white shirt with adetachable white collar.
To attach thebutterfly collar to the shirt you needed aback stud and a front stud.
It took me agesto get yhe studs through the slits of thecollar starched stiff.
I tried for all I wasworth but they just wouldn't go.
Finally Iput both the front slits of the collar intomy mouth and chewed them until theywere soft and at last I was able to get thestuds through the collar-slits.
Around the collar I tied a black tie, usingan ordinary knot.
Then came the trousers and the braces.
The trousers wer black with thin grey linesrunning down them.
I buttoned the braceson to the trousers, six buttons in all, then Iput on the trousers and fixed the braces tothe correct length.
I put on a brand new pair of black shoesand laced them up.
Now for the waistcoat.
This was also blackand it had twelve buttons down the frontand two little waistcoat pockets on eitherside, one above the other.
I put it on anddid up the buttons, starting at the top andworking down.
I was glad I didn't have tochew each of those button-holes to get thebuttons through them.
All this was bad enough for a boy who hadnever before worn anything better than apair of shorts and a blazer.
But the jacketput the lid on it.
It wasn't actually a jacket, it was a sort of tailcoat,and it was withouta doubt the most ridiculous garment I hadever seen.
Like the waistcoat, it was jetblack and made of a heavy material.
In thefront the two sides of it met only at onepoint.Here there was a single button andthis had to be done up.
From the buttondownwards, the lines of the coatseparated and came together again at thebacks of the knees, forming a pair of"tails".
When you walked, these tailsflapped against your legs.
I put the thingon and did up the front button.
Feeling likean undertaker's apprentice in a funeralparlour, I crept dowstairs.
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Предмет:
Английский язык -
Автор:
duke8rku - 6 лет назад
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Ответов:
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Смешали 20%-ный и 40%-ный растворы соляной кислоты и получили 25%-ный раствор. Найти отношение исходных растворов
Помогите, прошу)-
Предмет:
Математика -
Автор:
damion - 6 лет назад
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