Một sóng cơ có chu kì 2 s truyền với tốc độ 1 m/s. Khoảng cách giữa hai điểm gần nhau nhất trên một phương truyền sóng mà các phần tử môi trường dao động ngược pha nhau là ?         .  

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  She raised her hand high so that she could attract the teacher’s attention.

• Mark the letter A, Β, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  The staff couldn't have worked any harder, and they could not even finish half of the order all the week.         

• Mark the letter A, Β, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  You needn't have taken so many warm clothes there.  

• Mark the letter A, Β, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  My sister would love to be involved in the organization of the event, so would I.         

• Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the followingquestions:  

  The water was so cold that the children couldn't swim in it.         

• Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the followingquestions:

  We got lost because we forgot to take a map with us.         

• Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  Lucy always reminds me of my youngest sister.         

• Mark the letter A, Β, C or D to indicate the sentence that is closest in meaning to each of the following questions:

  She’s bound to see Jim at the meeting.         

• Mark the letter A, Β, C or D to indicate the sentence that is closest in meaning to each of the following questions:     

   I won't sell the painting, no matter how much you offer me.         

• Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions:

  Mary was very disappointed, but she tried to keep calm.