Trên một sợi dây đàn hồi dài 1,2 m, hai đầu cố định đang có sóng dừng với 5 nút sóng (kể cả hai đầu dây). Bước sóng của sóng truyền trên dây ℓà.

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  England has to win tonight’s _____________ match to go through to the next round of the competition.
   

• Choose the best answer for the following sentence:

  A / an _____________ is a prize, for example a gold cup, which is given to the winner of a competition or race.
  
  

• Choose the best answer for the following sentence:

  __________ 2002 World Cup was held in two ___________ Asian countries, Japan and Korea.
  
  

• Choose the best answer for the following sentence:

  Instruction should be given ____________________.
   

• Choose a word that has different stress pattern:

  diversity                    economic                      activity                      development

• Choose a word that has different stress pattern:

  region                  along                    export                   focus

• Choose a word that has different stress pattern:

  continent                 capital                     Pacific                  stimulate

• Choose the best answer for the following sentence:

  _____________ is land which is controlled by a particular country or ruler.
  
  

• Choose the best answer for the following sentence:

  The USA is one of the _______________ countries in the world. There are a lot of people of many different nationalities and cultures

• Choose the best answer for the following sentence:

  Unsettled weather will stretch from ___________ middle Mississippi Valley to the southern Middle Atlantic States.