21960
19.03.2020 •
Mathematics
An element has atomic number 10 and an atomic mass of 20. How many neutrons are in the atom of this element?
ОА. 10
ов. 20
ос. зо
ООО
ор. о
OE. 200
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Ответ:
138.16 = 2 π r
138.16/2π = 2π/2π r
21.98884694 =r
Diameter = r X 2
Diameter = 21.98884694 X 2
Diameter = 43.97769388