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21-11-2016
Physics

contestada

Fine grains of beach sand are assumed to be
spheres of radius 38.9 µm. These grains are
made of silicon dioxide which has a density of
2600 kg/m3
.
What is the mass of each grain of sand?
Answer in units of kg.
...?

Respuesta :

syed514 syed514

21-11-2016

Volume=(4/3)∗Π∗(38.9∗10−6)3Volume=0.2465683979∗10−12m3finallymass=2600∗0.2465683979∗10−12=0.641kg

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