Một con lắc lò xo dao động với chu kỳ T = 4s. Thời gian ngắn nhất để con lắc đi từ vị trí cân bằng đến biên là:

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

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

  Shall we discuss the problem after lunch, above a cup of coffee?

• Choose the correct sentence which is built from the words and phrases given.

  You / me / Smith / have / not / got / much / future / firm //.
  
  

• Choose the correct sentence which is built from the words and phrases given.

  It / true / rich / lead / different / life / poor //.
  
  

• Choose the correct sentence which is built from the words and phrases given.

  Judge / sentence / pickpocket / six / month / prison //.
  
  

• Choose the correct sentence which is built from the words and phrases given.

  New / house / near / sport centre / so / we / swim / play / tennis //.
  
  

• Choose the correct sentence which is built from the words and phrases given.

  She / go / wave / until / train / out / sight //.
  
  

• Choose the word that has the underlined part pronounced differently from the rest:  

  shifts                 retails                       drugs                    sectors

• Choose the word that has the underlined part pronounced differently from the rest:  

  sacrificed            approached                   reformed                   clapped

• Choose the word that has the underlined part pronounced differently from the rest:  

  flame                  stagnant                      labour                     change

• Choose the word that has the underlined part pronounced differently from the rest:  

  ethnic                  thank                 author                though