Trong giao thoa sóng cơ, hai nguồn dao động với các phương trình là và . Biết rằng tốc độ truyền sóng bằng , điểm M cách các nguồn lần lượt là 8,25 cm và 8,75 cm có biên độ tổng hợp là (cm). Khi đó  có thể nhận giá trị nào dưới đây?  

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  Can you explain why some people can work better when they are __________ pressure?
   

• Choose the best answer for the following sentence:

  Although my dad is busy with his work, he is willing to ____________ hand with the housework.
   

• Choose the best answer for the following sentence:

  ___________ other boys of the same age who are crazy about computer games, my brother spends his free time experimenting in the lab.
   

• Choose the best answer for the following sentence:

  Weekend in my family is the time when mother and daughter cook meals whereas father and son _________ broken things around the house.
   

• Choose the best answer for the following sentence:

  Whatever you do, I am by your side to give ____________.
   

• Choose the best answer for the following sentence:

  A ___________ studies living things and works with plants and animals.
  

• Choose the best answer for the following sentence:

  Whenever a problem __________, we try to discuss and find solution as soon as possible.
   

• Choose the best answer for the following sentence:

  Children are told to be __________ for the whole week and promised to be rewarded at weekends.
   

• Choose the best answer for the following sentence:

  I am proud to have a family who is ___________ of every member.
  
  

• Choose the best answer for the following sentence:

  Family is a good ___________ from which you can join the society with confidence.