Ex 1
1.grandfather
2. father
3. aunt
4. brother
5. mother
6. sister
7.grandmother
8. uncle
9. cousin
Ex 2.
1. She's Justin's mother. She's his mother.
2. He's Jane's brother. He's her brother.
3. They're Tom's cousin. They're his cousin.
4. They're Linda's grandparents. They're her grandparents.
5. He's Justin's uncle. He's his uncle.
6. He's Linda's father. He's her father.
Ex 3.
1. They are on the desk.
2. It is in my pencil case.
3. They are in my bag.
4. It is next to the pencil case.
5. They are in my pencil case.
6. It is under the notebook
Ex 4.
There are two supermarkets
There isn't a cafe.
There is a beach.
There is a castle
There isn't a hotel
There isn't museum
There is a park
There is a railway station
There are two cafes
There is a swimming pool
There are three bus stations
1)
1. grandfather
2. father
3. aunt
4. brother
5. mother
6. sister
7. grandmother
8. uncle (?) - if "cnelu", no word for "chelu"
9. cousin
2)
2. Tom's Jane's brother. She's his sister
3. Justin and Linda are Tom's cousins. He is their cousin.
4. Howard and Faith are Linda's grandparents. She is their grandaughter
5. Richard's Justin's uncle. He is his nephew.
6. Graham's Linda's father. She's his daughter.
3)
1. They are on the table
2. It's under my pens
3. They are in my bag
4. It is on the shelf
5. They are next to my rubber
6. It's in my backpack
4) There is not a cafe
There's a beach
There is a castle
There are not any hotels
There is not a museum
There's a park
There's a railway station
There are two cinemas
There's a swimming pool
There are three bus stations
180 см2 = 0,018 м2;
4 см2 = 0,00004 м2;
Давление, оказываемое большим поршнем на малый равно давлению, оказываемому малым поршнем на масло. Принимая, что давление равно отношению действующей силы к площади поверхности, найдем силу, с которой малый поршень давит на масло:
F1 * S1 = F2 * S2;
F2 = F1 * S1 / S2 = 18000 * 0,018 / 0,00004 = 8100000 Н = 8100 кН.
ответ: F2 = 8100 кН.