유효숫자. 40.2 g/cm3 0.0000003 cm 70 min 4.6×10^19 atoms

유효숫자. 40.2 g/cm3 0.0000003 cm 70 min 4.6×10^19 atoms

 

 

What is the number of significant figures

in each of these measured quantities?

a) 40.2 g/cm3

b) 0.0000003 cm

c) 70 min

d) 4.6×10^19 atoms

 

 

 

[참고] 유효 숫자 (significant figure)

[ https://ywpop.tistory.com/3212 ]

 

 

 

a) 40.2 g/cm3

---> 3개

 

 

b) 0.0000003 cm

---> 1개

 

 

c) 70 min

---> 1개

 

 

d) 4.6×10^19 atoms

---> 2개

 

 

 

 

[키워드] 유효숫자 개수 기준