-
Мальчик поднял ведро воды массой 10 кг из колодца глубиной 12м. Какую работу он при этом совершил?
-
Предмет:
Физика -
Автор:
kamronmora - 6 лет назад
-
Ответы 1
-
A=mgh где m масса ведра с водой, h глубина колодца А=10*10*12=1200Дж или 1,2кДжОтвет 1,2кДж.
-
Автор:
micah252 - 6 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
-
Работа с грамматическим материалом Present Perfect & Present Perfect Continuous:
Present Perfect or Present Perfect Continuous:
– How long you (learn) English, Mary?
I (learn) it for three years.
– Where is Catherine? – She is in the kitchen. She (cook) a family Christmas dinner since morning. She just (bake) a big pie.
– Are you playing on the computer? – Yes, I (play) for two hours. I (win) three computer games.
Susan (help) her mother about the house all day long. They already (clean) the floor and (dust) the furniture.
John and Mary (go) shopping since 3 o’clock. They (buy) a lot of nice things.
+ PRESENT TENSES Сhoose the right form of the verb:
I go / has gone to school every day.
Mike has had / is having a shower and he can’t take the phone right now.
Jack is sunburnt. He is lying / has been lying in the sun too long.
Mrs Johnson has been teaching / teaches French for thirty years.
If you throw ice into hot water, it is melting / melts.
What is / does Sam writing / write in his diary at the moment?
Molly always cries / is crying! It’s annoying!
You can take this book. I have finished / is finishing to read it already.
My train leaves / is leaving the station at 8 o’clock.
Polly has had / is having her birthday party tomorrow.
We have had / is having our new house for two years.
Patricia has been doing / has done her homework since she came back home from school.
Listen! Somebody plays / is playing the guitar next door.
Susan has never been eating / eaten such delicious dishes.
If you don’t water the trees, they die / are dying.
My mother looks / is looking beautiful.
They think / are thinking of going to Spain next summer vacation.
She has been playing / has played on the computer for three hours.
-
Предмет:
Английский язык -
Автор:
bart - 6 лет назад
-
Ответов:
2 -
Смотреть
-
-
Помогите решить!
2*(x+5)=12 ; 84:(x-3)=42 ; 3*(x+4)=33 ; 45:(x-5)=15 ; 4*(x-7)=12 ; 3*(x+4)=18 ;
2*(x+5)=30 ; 4*(x-6)=64 ; 6*(x+3)=96-
Предмет:
Математика -
Автор:
fernandohawkins - 6 лет назад
-
Ответов:
2 -
Смотреть
-
-
Продовж речення.Гумористи й сатирики потрібні для того, щоб...
-
Предмет:
Українська мова -
Автор:
chickie7caq - 6 лет назад
-
Ответов:
1 -
Смотреть
-
-
Собака погналась за кроликом, находящимся от неё в 150 футах .Она делает прыжок в 9 футов каждый раз,когда кролик делает прыжок в 7 футов. Сколько прыжков должна сделать собака, чтобы догнать кролика?
-
Предмет:
Математика -
Автор:
kaleighbx6y - 6 лет назад
-
Ответов:
0 -
Смотреть
-
Топ пользователей
-
Fedoseewa27
35934 -
Devilian
2792 -
Pikachu
2228 -
hobbesbowers
2116 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1158 -
Poinntt
946 -
Bars
930 -
Queenmagic18
770
How much to ban the user?
1 hour
1 day
100 years