Предмет: Физика, автор: Ninaleb

НЕ ПРОПУСКАЙТЕ ЭТУ ЗАДАЧУ МИМО ГЛАЗ СВОИХ, ПОМОГИТЕ МНЕ ЛЮДИ УМНЫЕ.
Жидкость находится между двумя поршнями площадью S1=20 см2 и S2=8 см2. На большой поршень действует сила F=12 кН. Пренебрегая атмосферным давлением, найти давление в жидкости. Ответ выразить в МПа, округлив до целых.

Приложения:

Ответы

Автор ответа: cvvkl
0
Согласно закону Паскаля давление во всех точках жидкости одинаково и распространяется во все стороны одинаково. Большой поршень создает давление P = F * S1 = 1,2*10⁴ Н * 20*10⁻⁴ м² = 24 Па = 2,4*10⁻⁵ МПа
Возможно так? Зачем дана площадь S2 непонятно.
Автор ответа: ngmc
0
Рассмотрим систему из дух поршней с соединяющим их стержнем как единое целое. На неё действует две силы давления со стороны жидкости и внешняя сила F. Из условия равновесия следует, что F+p⋅S2=p⋅S1
Откуда получаем, что давление в жидкости равно p=FS1−S2=10 МПа.
Автор ответа: cvvkl
0
Ни о какой системе двух поршней в задаче не сказано!!!
Автор ответа: ngmc
0
Жидкость находится между двумя поршнями площадью S1=20 см2 и S2=8 см2. Вот и система
Похожие вопросы
Предмет: Английский язык, автор: Galechkaaa
Срочнооо! тест!!!!

-The students aren't listening to me. *

The teacher said the students weren't listening to her.
The teacher said the students wasn't listening to her.
The teacher said the students aren't listening to her.

-I can get home on my own. * *

She said that she can get home on her own.
She said that she could get home on her own.
She said that she will get home on her own.

-I will send you a postcard. *

He told us he will send us a postcard.
He told us he sends us a postcard.
He told us he would send us a postcard

-I never make mistakes. *

He said he never made mistakes.
He said he had never made mistakes.
He said he made never mistakes

-I went to bed early last night. *

She said she has gone to bed early the night before.
She said she gone to bed early the night before.
She said she had gone to bed early the night before.

-I am going to see my parents next month. *

He said he was going to see his parents the following month.
He said he is going to see his parents the following month.
He said he goes to see his parents the following month

-I won't give you any more pocket money. *

My dad said he would not give me any more pocket money.
My dad said he would give me any more pocket money.
My dad said he will not give me any more pocket mone

-We haven't been to the art gallery for a long time. *

They said they haven't been to the art gallery for a long time.
They said they hadn't been to the art gallery for a long time.
They said they had been to the art gallery for a long time.

-'We've bought a new car. *

They told me they have bought a new car.
They told me they had bought a new car.
They told me they bought a new car.

-I don't speak German. *

She said she doesn't speak German.
She said she speaks German.
She said she didn't speak German.

-You failed your art exam *

You said that we failed our art exam.
You said that we would failed our art exam.
You said that we had failed our art exam.

-We're going ice-skating.

They said they are going ice-skating.
They said they was going ice-skating.
They said they were going ice-skating
Предмет: Математика, автор: mia251