к вертикальной гладкой стене подвешен на тросе АВ однородный шар массы М.Если троя составляют со стеной угол a,то сила давления шара на стену ровна

1)Mg cos a

2)Mg

3)Mg/cos a

4)Mg/sin a

5)Mgtg a

 

Проверить ошибки в 3 текстах:
1.
Matt has home education. Mother teachers Matt and twice a year the local school sends teachers to check that I`m learning properly. Home education is becoming popular recently. Many parents believe that  their children do better at home than at school. Matt thinks that home education has many benefits and he feels very comfortable.

2.

Caroline learn to boarding school. This school for teenage girls. Caroline says that the teachers are very helpful to them, encourage and help you can access them at any time. In boarding schools spend a lot of activities, games, a lot of attention paid to sport. Caroline really like to study in a boarding school, but she misses her family.

3.

Andrea learn comprehensive school. There are many clubs, such as drama, music, creative writing and art. The school has good laboratories and libraries. Andrea really like to study in this school, because there are good teachers and every student  likes to receive awards for their work, it makes them learn better.

Помогите пожалуйста заполнить табличку,очень нужно! Заранее огромное спасибо!!!

Чем отличались трагедия и комедия в древнегреческом театре?-если можно, то как можно короче сделайте ответ :) -