\(F_A=P-F=18-10=8N\)

\(V=\dfrac{F_A}{d}=\dfrac{8}{10000}=8\cdot10^{-4}m^3\)

\(d=\dfrac{18}{8\cdot10^{-4}}=22500\)N/m³

\(F_A=P-P'=18-10=8N\)

\(V=\dfrac{F_A}{d}=\dfrac{8}{10000}=8\cdot10^{-4}m^3\)

\(d=\dfrac{P}{V}=\dfrac{18}{8\cdot10^{-4}}=22500\left(\dfrac{N}{m^2}\right)\)

1. a

2. b

3. b

4. b

5. b

6. d

7. c

8. b

9. b

10. a

11. c

12. d

13. b

14. b

15. c

mn ơi cần gấpppppp

T^T

She is nice ?                                                   the children are in their class now

They don't are students.                                Are they workers ? No , they aren't

He is fine today                                                các câu còn lại thì tự làm !!

My brother doesn't is a doctor         

nooooo mik làm đến câu 7 r mak ấn nhầm h lại phải vieetsl ại hừ hừ dcmmmmmmmmmmmmmmmmmmmmmmmmm cuộc đời

Part 1

1 on

2 as

3 who

4 so

5 well

6 didn't

Part 2

1 - G

2 - A

3 - F

4 - B

5 - C

6 - D

Part 3 

1 have walked

2 learnt

3 watches

4 playing

5 be done

6 impressed

7 surprisingly

8 cosumption

Part4

1 reduce => reduces

2 whom => who

part 1

1 ON

2WHOM

3 WHO

4 SO

5 WELL

6 DIDM'T

part 3

1 walk

2 learnt

3 playing

4 impressive

5 suprising

B

A

A

A

B 

7. B

9. A

11. A