1, Nam wanted to watch Tom And Jerry so he turned to  the Cartoon channel.

2, You turn the TV on and you can watch your favourite show. 

3,  I’m interested in the history of television so I like reading books about it.

4, I love films but I don’t like watching them on television. 

5, Mang Tien Ve Cho Me is a meaningful song so many  listeners love it. 

1. Nam wanted to watch Tom And Jerry. He turned to the Cartoon channel. (so)

→ Nam wanted to watch Tom And Jerry so he turned to the Cartoon channel.

2. You turn the TV on. You can watch your favourite show. (and)

→ You turn the TV on and you can watch your favourite show _______________________________________________________________________________

3. I’m interested in the history of television. I like reading books about it. (so) I’m interested in the history of television. I like reading books about it.

→  I’m interested in the history of television so I like reading books about it. _______________________________________________________________________________

4. I love films. I don’t like watching them on television. (but)

→ I love films but I don’t like watching them on television _______________________________________________________________________________

5. Mang Tien Ve Cho Me is a meaningful song. Many listeners love it. (so)

→ Mang Tien Ve Cho Me is a meaningful song so many listeners love it. _________________________________________________________________________

A

A nhé

A

Bài 9.a) Quãng đường vật rơi trong 3s đầu tiên:

              \(S_3=\dfrac{1}{2}gt^2=\dfrac{1}{2}\cdot9,8\cdot3^2=44,1\left(m\right)\)

              Quãng đường vật đi trong giây thứ 3 là:           \(S'=\dfrac{1}{2}gt^2-\dfrac{1}{2}g\left(t-1\right)^2=\dfrac{1}{2}\cdot9,8\cdot3^2-\dfrac{1}{2}\cdot9,8\cdot2^2=24,5\left(m\right)\)

Bài 10.

 a) Thời gian vật rơi khi chạm đất: \(t=\sqrt{\dfrac{2S}{g}}=\sqrt{\dfrac{2\cdot45}{10}}=3\left(s\right)\)

     Vận tốc vật khi chạm đất: \(v=g\cdot t=10\cdot3=30\)m/s

b) Quãng đường vật rơi trong giây cuối cùng:

   \(S=\dfrac{1}{2}gt^2-\dfrac{1}{2}g\left(t-1\right)^2=\dfrac{1}{2}\cdot10\cdot3^2-\dfrac{1}{2}\cdot10\cdot2^2=25\left(m\right)\)

Bài 11.

a) Quãng đường vật rơi trong 2s đầu tiên:

     \(S=\dfrac{1}{2}gt^2=\dfrac{1}{2}\cdot10\cdot2^2=20\left(m\right)\)

\(n_{Na_2O}=\dfrac{6,2}{62}=0,1\left(mol\right)\\ a.Na_2O+H_2O\rightarrow2NaOH\\ 2NaOH+CuSO_4\rightarrow Na_2SO_4+Cu\left(OH\right)_2\\ Cu\left(OH\right)_2\underrightarrow{^{to}}CuO+H_2O\\ b.n_{CuO}=n_{Cu\left(OH\right)_2}=\dfrac{n_{NaOH}}{2}=n_{Na_2O}=0,1\left(mol\right)\\ \Rightarrow m_Y=m_{CuO}=0,1.80=8\left(g\right)\\ CuO+CO\underrightarrow{^{to}}Cu+H_2O\\ n_{CO}=n_{CuO}=0,1\left(mol\right)\\ V_{CO\left(đktc\right)}=0,1.22,4=2,24\left(l\right)\)

nNa2O=6,262=0,1(mol)a.Na2O+H2O→2NaOH2NaOH+CuSO4→Na2SO4+Cu(OH)2Cu(OH)2to→CuO+H2Ob.nCuO=nCu(OH)2=nNaOH2=nNa2O=0,1(mol)⇒mY=mCuO=0,1.80=8(g)CuO+COto→Cu+H2OnCO=nCuO=0,1(mol)VCO(đktc)=0,1.22,4=2,24(l)

Ta có: \(\sqrt{\dfrac{3\sqrt{5}-1}{2\sqrt{5}+3}}-\sqrt{\dfrac{\sqrt{5}+11}{7-2\sqrt{5}}}\)

\(=\sqrt{\dfrac{\left(3\sqrt{5}-1\right)\left(2\sqrt{5}-3\right)}{11}}-\sqrt{\dfrac{\left(11+\sqrt{5}\right)\left(7+2\sqrt{5}\right)}{29}}\)

\(=\sqrt{\dfrac{11\cdot\left(30-9\sqrt{5}-2\sqrt{5}+3\right)}{121}}-\sqrt{29\cdot\left(\dfrac{77+22\sqrt{5}+7\sqrt{5}+20}{841}\right)}\)

\(=\dfrac{\sqrt{363-121\sqrt{5}}}{11}+\dfrac{\sqrt{2813+841\sqrt{5}}}{29}\)

\(=\dfrac{\sqrt{726-242\sqrt{5}}}{11\sqrt{2}}+\dfrac{\sqrt{5626+1682\sqrt{5}}}{29\sqrt{2}}\)

3.

Áp dụng t/c dtsbn:

\(\dfrac{x}{y}=\dfrac{13}{9}\Rightarrow\dfrac{x}{13}=\dfrac{y}{9}=\dfrac{x-y}{13-9}=\dfrac{24}{4}=6\\ \Rightarrow\left\{{}\begin{matrix}x=78\\y=54\end{matrix}\right.\)

Why did you stay at home?

Who are they waiting for?

What is she doing at the moment?

How did she go to Ha Noi? 

When does your father often watch TV?

she is interested in reading comic

Tomorrow in this time I wil be lieing on the beach

My car isn't as expensive as his

She has started live in Paris since 2005

A new dam will build near the rive next year

She is interested in reading comic.

Tomorrow in this time I wil be lying on the beach.

My car isn't as expensive as his.

She has started living in Paris since 2005.

A new dam will be built near the rive next year.