user-avatar
boyisaloner
2 năm trước
Đặt 1 bao gạo 60 kg lên một cái ghế bốn chân có khối lượng 4 kg. Diện tiếp xúc với mặt đất của mỗi chân ghế là 8 cm2. Tính áp suất các chân ghế tác dụng lên mặt đất.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Hoàn tất các câu sau với too hoặc either. Ex: Hoa likes spinach, and her uncle ______ Hoa likes spinach, and her uncle does, too. Hoa doesn’t like durian. Her uncle ______ Hoa doesn’t like durian. Her uncle doesn’t either. 1. We often go swimming in the summer, and they ______ 2. She can speak English very well. I______ 3. Nam didn’t come to the party last night, and Minh ______ 4. Hoa will buy some oranges and pineapples. I ______ 5. They don’t want to go out tonight, and we ______ 6. The pineapples aren’t ripe, and the bananas ______ 7. Nam is hungry and his friends _____ 8. Jane won’t come. Peter ______ 9. Hoa had a medical check-up yesterday morning. We ______ 10. He can’t swim and his brother ______ B. Hoàn tất các câu sau, dùng so hoặc neither. Ex: I like beef, and ______my sister. I like beef, and so does my sister. They don’t play soccer. ______we. They don’t play soccer. Neither do we. 1. I ate bread and eggs for breakfast. ______I. 2. Hoa doesn’t like pork, and ______her aunt. 3. Milk is good for your health. ______fruit juice. 4. I didn’t see her at the party last night. ______we. 5. These boys like playing soccer, and ______those boys. 6. My father won’t go to Ha Noi, and ______my mother. 7. Nam can swim. ______Ba. 8. The spinach isn’t fresh. ______the cabbages. 9. You should drink a lot of milk, and ______your brother. 10. I don’t know how to cook. ______my sister.

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team