Предмет: Физика, автор: Zzzzzzzz9m

Пляшку, заповнену газом, щільно закрили корком, що має в поперечному перерізі площу 2,5 см2. До якої температури треба нагріти газ, щоб корок вилетів із пляшки, коли сила тертя, що утримує корок, дорівнює 12 Н? Початкова температура –3 °С, атмосферний тиск 105 Па. Срочно!!

Ответы

Автор ответа: koreyka51
4

Ответ: T2=132℃

Объяснение:

дробь⇒  p₁   p₂

                T₂ =T²    

F=(p₂−p₁)S

           F

p₂=p₁+ S

            F

дробь⇒p₁   p₁+ S

             T₁ = T₂

T2=T1(p1+FS)p1=T1(1+FSp1)

[T2]=К⋅Нм2⋅Па=К⋅ПаПа=К

T2=270⋅(1+12,52,5⋅10−4⋅105)=405(К)

T²=132℃


makaka2877: Ти такий дебіл
Zzzzzzzz9m: заткнись шавка
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Прочитайте текст и вставьте вместо каждого пропуска нужную грамматическую форму, выбрав её из выпадающего списка.


I am your mother


Joyce is 24 years old. She has a baby daughter, but she can ’t take A____ of her baby. The government takes Joyce’s baby and gives her to B____ family. Joyce never forgets her daughter. For 20 years Joyce looks C____ her. She can ’t find her. She doesn’t know her daughter’s new name. She doesn’t know her daughter’s D____ . When Joyce is 44 years old, she gets a E____ at a small store.


A young woman works with Joyce at the store. The young woman’s name is Tammy. Tammy and Joyce are friends. One day at work Tammy begins to cry. “What’s the matter?” Joyce asks Tammy. “I’m looking for my birthmother and I can’t find her. I have only this photo. See? This is me when I was a baby.” Tammy shows Joyce the photo. Joyce looks at the photo for a long time. “Tammy,” Joyce says. “I think I'm your birth mother.”


A 1) love 2) care 3) kindness 4) attention


B 1) other 2) another 3) others 4) through


C 1) for 2) forward 3) after 4) his


D 1) school 2) country 3) address 4) character


E 1) place 2) work 3) department 4) job


Запишите в таблицу выбранные цифры под соответствующими буквами.


A B C D E

2 задание.
Прочитайте текст и вставьте вместо каждого пропуска подходящее слово, выбрав его из выпадающего списка. Два слова в списке лишние.

My grandmother

The person who (A)____ me the most about life is my grandmother. My parents travelled a lot when I was (B)____ so I spent most of my school holidays with her. She was (C)____ than just a grandmother to me. She was such a considerate person. She (D)____ how much I missed my parents so she did everything she (E)____ to make me feel at home. She was also really imaginative and spent hours telling me stories that she had made up. She taught me so many important things. She was the most positive person I’ve ever met and she taught me how to look for the good in everything.

1. younger; 2. knew; 3. could; 4. more; 5. has taught; 6. natural; 7. warning.

Запишите в таблицу выбранные цифры под соответствующими буквами.

A B C D E