Từ độ cao h=4m, ném một vật theo phương thẳng đứng xuống dưới, khi chạm đất, vật nảy lên độ cao h'=3/2h. Bỏ qua mất mát năng lượng khi chạm đất. Tính tốc độ đã ném vật?

VI Problems with Nouns 1. As a compilation of useful details, a weekly magazine commends itself in several respects. A B C D 2. Through aquaculture, or fish farming, more than 500 million tons of fish are produced each years. A B C D 3. The sugar system has much safeguards to protect the right of a defendant to an impartial jury. A B C D 4. Many of the food consumed by the penguins consists of fish obtained from the ocean. A B C D 5. Coffee and tea is favorite hot drinks of people in all parts of the world. A B C D 6. Uranus is the seventh planets from the Sun. A B C D 7. Bacteria that live in soil and water play a vital role in recycling carbon, nitrogen, sulfur, and another A B C chemical elements used by living things. D

THUYẾT MINH VỀ SÂN TRƯỜNG EM em có một bài viết số về nhà yêu cầu thuyết minh về sân trường em nhưng không biết nên biết thân bài như thế nào nữa.. mọi người có thể giúp em LẬP DÀN Ý THÂN BÀI CHI TIẾT không ạ * yêu cầu của cô là thân đoạn phải có ít nhất 4 đoạn nhỏ nói về 4 vấn đề khác nhau

Ai hộ mình giúp hộ đứa e mình nha!! Mình cho 5sao 20s mình phải nộp rồi -^- Cảm Ơn!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Tính diện tích hình tam giác có đáy 5m,chiều cao 10m

Question 46: “I agree that I am narrow–minded,” said the manager. A. The manager denied being narrow–minded. B. The manager admitted being narrow–minded. C. The manager refused to be narrow–minded. D. The manager promised to be narrow–minded. Question 47: A supermarket is more convenient than a shopping centre. A. A shopping centre is not as convenient as a supermarket. B. A shopping centre is more convenient than a supermarket. C. A supermarket is not as convenient as a shopping centre. D. A supermarket is as inconvenient as a shopping centre. Question 48: It was a mistake for Tony to buy that house. A. Tony couldn’t have bought that house. B. Tony can’t have bought that house. C. Tony needn’t have bought that house. D. Tony shouldn’t have bought that house. Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions. Question 49: Julian dropped out of college after his first year. Now he regrets it. A. Julian regrets not having dropped out of college after his first year. B. Julian wishes he didn’t drop out of college after his first year. C. If only Julian hadn’t dropped out of college after his first year. D. Only if Julian had dropped out of college after his first year would he not regret it. Question 50: Seth informed us of his retirement from the company. He did it when arriving at the meeting. A. Only after his retiring from the company did Seth tell us about his arrival at the meeting. B. Not until Seth said to us that he would leave the company did he turn up at the meeting. C. Hardly had Seth notified us of his retiring from the company when he arrived at the meeting. D. No sooner had Seth arrived at the meeting than we were told about his leaving the company.

Một xe máy đi từ A đến B với vận tốc 50km/h.Đến B ng đó nghỉ 15 phút r quay về A vs vân tốc 40km/h.Biết thời gian tổng cộng là 2h 30 phút.Tính quãng đg AB

Tính giá trị của biểu thức sau tại x = 2 và y = -2 C = x(x2 - y)(x3- 2y2)(x4-3y3)(x5- 4y4)

Câu 2 (1,5 điểm). Trong chương trình Ngữ văn 6 kì I, con đã được học những câu chuyện sâu sắcvề nội dung và giàu giá trị nghệ thuật. Hãy viết đoạn văn ngắn (khoảng 5 đến 7 câu) nêu cảm nhậncủa con về truyện ngụ ngôn “Thầy bói xem voi”.

nêu tính chất sự giãn nỡ vì nhiệt của chất rắn