Trong nguyên tử, giữa bán kính hạt nhân (r) và số khối của hạt nhân (A) có mối quan hệ như sau : r = 1,5.10^-13.A^1/3 cm. Khối lượng riêng của hạt nhân nguyên tử (tấn/cm³) là :

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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: 

  You are all welcome to take any food you like.         

• 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: 

  The firemen were in time to save the people but not the house.         

• 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:

  What he did came as no surprise to 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:

  The children couldn't go swimming because the sea was too rough.         

• 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:

  The girl didn’t have any friends. Therefore, she felt lonely.         

• 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:

  "Leave my house now or I'll call the police!" shouted the lady to the man.         

• 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:

  They have collected the tests and checked the answers.           

• 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:

  Machines have taken the place of the people who used to do this kind of work.         

• 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:

  Amanda has improved a lot this term.           

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

  The boy became so confused and worried that he left home.