Предмет: Физика, автор: krusms

Двигун теплової машини виконав корисну роботу, що дорівнює 3,6·10^{8} Дж, і використав при цьому 40 кг кам'яного вугілля. Обчисліть ККД цього двигуна

Ответы

Автор ответа: boguuuun

22

ККД=Акор./Апов.•100%

Апов.=qm

ККД=Акор./qm

[ККД]=Дж/(кг•Дж/кг)

ККД=360 000 000/33 000 000• 40=360 000 000/1 320 000 000≈0.27≈27%

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ПОМОГИТЕ 100 БАЛЛОВ
Task 1 (12 points).

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Заполните пропуски, используя подходящую форму глаголов в скобках.

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Task 2 (12 points).

Complete each second sentence using the word given so that it has a similar meaning to the first sentence.

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In the past …………………………………………….. than they do now.
My father wouldn’t let me have parties at home when I was young. used
My father …………………………………………….. to let me have parties at home when I was young.
Did you know that there was a restaurant on this corner? to
Did you know that …………………………………………….. a restaurant on this corner?
Using electronic books and online dictionaries is no longer unusual. got
We …………………………………………….. electronic books and online dictionaries.
I’ve lived in Japan for two years and the rainy season is normal for me now. used
I’ve lived in Japan for two years and ……………………………………….. the rainy season.
He’s new in this school, but in a month he’ll get to know his new classmates better. be
He’s new in this school, but in a month he ……………………………….. his new classmates.

“I’m going to invite my colleagues next week,” Monica said.
Monica said that ………………………………………………………………....
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Заполните пропуски, используя следующие фразовые глаголы. Внесите необходимые изменения.

pull in

stop over

set off

look around

get back

go away

check out

drop off

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pick up

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Подберите к идиомам подходящее значение и напишите 6 предложений с любыми из них.

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5. to live out of a suitcase

E. to be very successful

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