Một vật có khối lượng 4200g và khối lượng riêng D = 10,5 g/cm3 được nhúng hoàn toàn trong nước. Tìm lực đẩy Acsimet tác dụng lên vật, cho trọng lượng riêng của nước d = 10000N/m3

Giúp em câu này với ạ iu mn nhìuu

chuyên gia giúp vs Xenlulozơ trinitrat là chất dễ cháy và nổ mạnh, được điều chế từ xenlulozơ và axit nitric. Cần để sản xuất 594 g xenlulozơ trinitrat nếu hiệu suất đạt 60% và lượng xenlulozo cần dùng là

Giúp em câu này với ạ iu mn nhiều

giải theo cách lập pt cho iem với ạa

I. Choose the word or phrase that best fits the blank space in the following passage. Either boys or girls, usually aged from seven to ten, play the two-person game of “Mandarin’s Box”. They draw a rectangle on the ground and (1) it into ten small squares called “rice fields” or “fish ponds”. They also draw two additional semi-circular boxes at the two (2) of the rectangle, which are called “mandarin’s boxes” – the game’s name, each person has 25 small pebbles and a bigger stone. Each player places the stone in one of the mandarin’s boxes and five small pebbles in each of the other squares. Then the game begins. The first player takes up the contents of one square onhis or her side of the board, but not a mandarin’s box and distributes the pebbles one by one, (3) with the text square in (4) direction. Since each square contains five pebbles at the beginning, the first move will distribute five pebbles to the left or right. After the last pebble is distributed, the player takes the contents of the following square and repeats the distribution (5) . But if the following square is one of the mandarin’s boxes, the turn ends and passes to the other player. If the last pebble falls into a square that precedes one empty square, the player wins all the contents of the square following the empty square and (6) these pebbles from the board. However, if there are two or more empty squares in a row, the player (7) his or her turn. Once a player has taken pebbles from the board, the turn is (8) to the other player. If all five squares on one player’s side of the board are emptied at any time, that player must place one pebble he or she has aside back in each of the five squares so that the game can resume. The game (9) until the two mandarin’s boxes both been (10) . At the end of the game, the player with more pebbles wins, with each of the large stones counting as ten points. 1. A. divide B. share C. separate D. leave 2. A. aims B. ends C. small points D. stops 3. A. start B. starting C. start D. having started 4. A. no B. all C. either D. both 5. A. action B. method C. change D. process 6. A. ends B. disappears C. leaves D. removes 7. A. loses B. succeeds C. fails D. wins 8. A. gone B. made C. handed D. rewarded 9. A. starts B. pauses C. stops D. continues 10.A. held B. taken C. moved D. accepted

Giúp e với e đg cần gấp ạ . Ai là nhanh và đúng sẽ cho ctlhn và 5* và cảm ơn ạ . Mn làm nhanh giúp e ạ

chỉ cần ghi đáp án🥰🥰🥰🥰🥰🥰

vì sao bệnh sốt rét hay xảy ra ở miền núi và vùng sông nước? Biện pháp phòng tránh? NO COPY MIK ĐANG CẦN GẤP

I. Read the passage and answer the questions. My grandmother is more than ninety years old, which makes her the oldest person in the whole family. Despite her old age, her memory is still fresh. She always tells us that many things were different when she was young. My grandma used to begin her day very early. She used to start a day at 4 . o’clock while everybody was still in beds. She used to do all the housework by herself. She used to make clothes for her children and as for her outdoor work, she used to raise chickens and sheep. She also used to help the males to grow vegetables. There didn’t use to be many pastime activities. Her hobby used to be listening to the radio. In the evening all the family used to sit by the fire in the sitting room where all the family gathered at night to tell tales or discuss family matters as weddings, harvest time or to assign the next day’s work. When a member of the family was ill, she used to show him which herbs to use. She collected them from the near forest or from the mountain. My grandma used to , know so many effective methods to cure illnesses. * Questions: 1. How is the memory of the writer’s grandmother? _____________________________________________________________ 2. What time did she use to start her day? _____________________________________________________________ 3. What did she use to do in her pastimes? _____________________________________________________________ 4. Where did her family use to sit in the evening? _____________________________________________________________ 5. What did she usually do when a member of the family was ill? _____________________________________________________________