Trong hiện tượng giao thoa sóng trên mặt một chất lỏng với hai nguồn O₁, O₂ có cùng phương trình dao động u0 = acosωt. Biết bước sóng là λ. Khoảng cách giữa 2 điểm dao động với biên độ cực đại trên đoạn O₁O₂ bằng: 

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose one sentence that has the closest meaning to the root one:

  Unless you come on time, we will go without you.
  
  

• Choose one sentence that has the closest meaning to the root one:

  Thanks to her high grades at university, she is offered the position.
  
  

• Choose one sentence that has the closest meaning to the root one:

  I am very interested in the book you lent me last week.
  
  

• Choose a word that has different stress pattern:

  economic              experience               entertainment               introduction

• Choose a word that has different stress pattern:

  achievement               communist              constantly               government

• Choose a word that has different stress pattern:

  heavy               major                program              reform

• Choose a word that has different stress pattern:

  production               consumer                  domestic                 business

• Choose a word that has different stress pattern:

  hospital              inflation              policy                  constantly

• Find a mistake in the four underlined parts of the sentence and correct it:

  The term economic reform refers to policies directing by the government to achieve improvements in economic efficiency.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Economic reform usually refers to actions of the government to improve efficiency in economy markets.