Trong con lắc lò xo nếu ta tăng khối lượng vật nặng lên 4 lần và độ cứng tăng 2 lần thì tần số dao động của vật:         

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose one sentence that has the same meaning as the root one:

  I did not answer the phone, even though I knew it was my husband calling, (despite)

   

   

• Choose one sentence that has the same meaning as the root one:

  The weather was beautiful but we did not go on a picnic, (of)

   

   

• Choose one sentence that has the same meaning as the root one:

  If I were you, I would speak to your boss, (to speak)

   

   

• Choose one sentence that has the same meaning as the root one:

  Why don’t we leave after breakfast on Saturday? (leaving)

   

   

• Choose one sentence that has the same meaning as the root one:

  He likes drinking wine. The wine is imported from Scotland.
  
  

• Choose one sentence that has the same meaning as the root one:

  I warned them against crossing the park at night, (to cross).

   

• Choose one sentence that has the same meaning as the root one:

  My mother bought the food this morning. It is very fresh.
  
  

• Choose one sentence that has the same meaning as the root one:

  Had he listened to me, he wouldn't have failed the driving test.

   

• Choose one sentence that has the same meaning as the root one:

  potholes / fill up / village roads / wide and clean.

   

   

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

  The man who name’s Hung gave you this letter.