mot vat co khoi luong rieng la 2600kg/m khối hỏi trọng lượng riêng của vật là bao nhiêu

2 câu trả lời

$Ta có D = m : V = P : 10 : V = d : 10$

$ => d = 10D$

Vậy trọng lượng riêng vật đó là:

        2600 . 10 = 26000(N/m^3)

             Đáp số: 26000 N/m^3

Trọng lượng riêng của vật=Khối lượng riêng.9,8

                                         =25480N/m³

Cũng có thể lấy g=9,8 hoặc làm tròn 10 tùy theo bài

 

 

Câu hỏi trong lớp Xem thêm

VII. Read the passage. Then answer the questions. (1.0 point) Mai and Hoa are students. They live in Viet Nam. There are four seasons in a year in their country. They are spring, summer, fall and winter. In the spring, the weather is usually warm. Sometimes it is cold, but not very cold. There are many flowers in this season. After spring, it is the summer. In the summer, the days are long and the nights are short. They often go on vacation in the summer. Fall is a nice season. The weather is often cool. In the winter, it is usually very cold. The days are short and the nights are long. They always wear warm clothes in the winter. Questions: 1. How many seasons are there in their country? What are they? =>……………..……………………………………………………………………………………… 2. What is the weather like in the spring? =>………………..…………………………………………………………………………………… 3. What do they often do in the summer? =>…………………..………………………………………………………………………………… 4. Are the days long or short in the winter? =>………………..…………………………………………………………………………………… 5. Why do they always wear warm clothes in the winter? =>………………..……………………………………………………………………………………

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