Vật nằm trong khoảng tiêu cự
Ta có: $\dfrac{1}{d}-\dfrac{1}{d'}=\dfrac{1}{f}$
$⇔\dfrac{1}{10}-\dfrac{1}{d'}=\dfrac{1}{30}$
$⇔d'=15cm$
III.Write in passive voice: 1. My mother gave me a very good book on my birthday. __________________________________________________________________________ 2. Are you doing your exercises now? __________________________________________________________________________ 3. She has to correct the mistakes soon . __________________________________________________________________________ 4. The Greens are going to paint this house and these cars. __________________________________________________________________________ 5.Tam collected 4 kilos waste paper last Sunday. __________________________________________________________________________ 6. We have exported rice to many countries so far. 7. They speak their own languagues in Vietnam . __________________________________________________________________________ 8. Large number of tourists visit these tourist attractions annually. . __________________________________________________________________________ 9. Did the police find the missing girl? __________________________________________________________________________ 10. I bought a small plant and placed it in a corner of the room .
Tả giúp em bài này với ạ ( tả con trai nha)
I. FILL IN THE BLANKS USING THE WORDS IN THE BOX: 1.I went to Luciano Pavarotti’s opera show at the Sydney Opera House. 2. I’m going to have a picnic in ……………………………….. 3.My mom is going to visit the ………………………… in Paris. There are lots of beautiful paintings there. 4.Christine’s going to visit the …………………………………….in New York on holiday. 5.……………………………………………is one of the most famous landmarks in Japan . It’s the second the tallest building in Japan. 6.The…………………………….. is the central landmark of San Francisco. 7.Peter and Paul are going to Bangkok next week. They’re going to see beautiful temples and the …………………………. II. CIRCLE THE CORRECT WORDS 1. He / are going to visit the Golden Gate Bridge in San Francisco next week. 2. They am / are going to travel by plane. 3. My best friend is / are going to watch a movie tonight. 4. My parents is / are going to visit the Louvre Museum in Paris on holiday. 5. I am / is going to visit the Grand Palace in Bangkok for my summer vacation . 6. We are / is going to visit Hyde Park in London this weekend. 7. My family and I is / are going to climb the mountain on holiday. III. UNSCRAMBLE THE SENTENCES. 1. are / Where / you going to / you / on holiday / go / ? →Where are you going to go on holiday? 2. I am/ visit the Grand Palace/ going to/ for my summer vacation/ in Bangkok/ →………………………………………………………………………………. 3. you / going / What/ to / are / there ? / do / →………………………………………………………………………………. 4. do? else / you / going are / What / to →………………………………………………………………………………. 5. What / to buy / there ? / you/ going / are / →……………………………………………………………………………….
ai giúp em cả bài 5 với ạ toán đại trà nhé !
Hỏi tí tính A) (+15) +(+17) b)(-57)+25 c)12+(-12) d)15-25
Phân biệt thời tiết với khí hậu.
Nguyên nhân gây cạn kiệt nguồn tài nguyên, môi trường? Em cần làm gì khi thấy con người phá hoại môi trường và tài nguyên thiên nhiên?
lớp vỏ khí đc chia ra làm mấy phần? Nêu vị trí, đặc điểm của từng phần, Tầng nào có ảnh hưởng trực tiếp đến sinh sống của con người
1. I didn’t mean to be impolite. It ………………………………………………………………………..……………………
1. Nêu đặc điểm hình thức và chức năng của câu cảm thán. 2. Viết đoạn văn ngắn ( khoảng 7-10 câu) về diễn biến của dịch Covid 19 hiện nay ở Việt Nam, có sd câu cảm thán ( chỉ ra và nêu đặc điểm hình thức của câu cảm thán đó).
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