10
grammine
10
grammine
rauast kuul kaetakse plastiliiniga. Pärast plastiliiniga katmist on kuuli kogumass
15
grammi
15
grammi
. Milline on plastiliiniga kaetud kuuli keskmine tihedus? Plastiliini tihedus on
1
,
4
g
/
c
m
3
1
,
4
g
/
c
m
3
.
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