2 vật có m1=2kg, m2=3kg. Nối với nhau bởi 1 lò xo nằm ngang kéo vật m1 theo phương ngang với lực F=80N thì lò xo dãn ra 2cm. A. Tìm độ cứng của lò xo B. Nếu thay lò xo bằng 1 sợi dây có sức căng cực đại thì dây có đứt không?! P/s. Giiúp e vs ạ! Cảm ơn

Em hãy viết báo cáo thực hành: về quá trình công nghiệp hóa hiện đại hóa ở Việt Nam diễn ra khi nào lấy số liệu dẫn chứng

5x^2+5x/ x^2 +2x+1 va 5^3-5x^2+5x / x^3+1 de bai : bang cach rut gon phan thuc chung to cap phan thuc sau bang nhau

Giúp mình câu 4,5 với ạ :(( ghi phương trình được rồi là mình hiểu, cám ơn nhiều ạ :((

Tìm các số nguyên X sao cho (x-1) là ước của 15

Tìm các số nguyên x sao cho (x+6) chia hết cho (x+1)

Tìm các số nguyên x sao cho (x-5) là ước của 6

Sửa lỗi sai dùm mình với! Nowadays, there are many measures to effectively use and avoid the harmful effects of social networks. The most important thing is each individual must use reasonable, right time, right way, needs and the limitations such as we need to be selective when making friends, limit chatting with strangers, don't post too many photos and always keep your personal information private on social networks because other people can steal things that affect us. Parents need to educate and raise awareness for their children. For example, we should manage, limit using time, can check social networking sites are safe or not. In conclusion, problems are bad, good and social networks too. It is a great and easy place to study and entertain. Although it has limitations, we can fix it easily. So, stay healthy, use social media appropriately, let it be a means to help you grow and be better and always know how to choose the good and fix the bad of social networks .The most important thing is that every human being must build a solid courageous reception when participating in this free world.

Giúp mình câu 5,6 với :(( ghi sơ sơ cách giải là được, mình tự tính. Cám ơn nhiều ạ

Sửa lỗi sai dùm mình. Besides, social networks also have some disadvantages for users and people around us. We will spend a lot of time for using social networks from that all our activities will be affected. First, every time for for every activity will decrease from daily meals, activities with family, studying to social activities … so the relationship will be no more. Second, the body always feel tired, eyesight will be reduced. Psychological users are guilty, lack of positive, loneliness in life because we lack of sharing, caring, talking directly with people. Third, today the social network is very wide, many social components are used and very difficult to manage so the risk of exposure to inaccurate, unhealthy information and cheat about affection, money, material.