Вопрос по физике:

Определить токи эквивалентное сопротивление и мощности в цепи параллельно соединённых сопротивлений r1=50 Ом r2= 30 Ом напряжение на которых 12-В

Вопрос по английскому языку:

Помогите пожалуйста 8 класс. Grammar

Variant 2

Ex.1

Open the brackets using the correct form of Conditionals (0, 1, 2, 3).

1.    If we don’t stop deforestation, we ________ (lose) the rainforests.

2.    If you __________ (speak) louder, your classmates would understand you.

3.    If he _____________ (fail) the exams, his parents would have been very disappointed.

4.    If you were slimmer, you _________ (buy) this pair of jeans.

5.    The door will unlock if you ___________ (press) the green button.

6.    If you swim in this lake, you ________ (shiver) from cold.

7.    If the teacher had explained better, the children _______ (do) the task correctly.

8.    If the temperature is high, the ice _______ (melt).

9.    If Liza looked in the fridge, she _________ (find) the milk there.

10. The performance would have been better if the pianist ____________(practice) harder.

Ex. 2

Use the relative pronouns to complete the sentences: who, which, where, when, whose.

1.    Gordon, _____ is in our class, volunteers at the library after school.

2.    Alice doesn’t know _________ is my sister’s Birthday.

3.    I live in Canada, _______ is a very populated country.

4.    The people _______ house I am staying at are very kind to me.

5.    That's the drawer _______ I keep my jewellery.

6.    I need a coat _______ will keep me warm.

7.    The woman _______ husband is a football player always complains about his job.

Вопрос по английскому языку:

Переделайте прямую речь в косвенную.

Mark said: We never lock this door.

John said: I have seen this film.

Wendy told: “Put on your coat!”

помогите пожалуйста

Вопрос по русскому языку:

Вопрос по физике:

Тело массы 800г движется со скоростью 3м/с по гладкой горизонтальной поверхности.Навстречу ему движется тело массой 200г со скоростью 13 м/с.Происходит абсолютно неупругие дары тела слипаются найти скорость тела после удара.