tsigler6425
01.09.2019 •
Physics
An aluminum sheet is compressed to a thickness of 2.0 microns. if each cubic centimeter of aluminum has a mass of 2.70 g, what is the mass of an aluminum sheet, in grams, if its total surface area is 5 m2
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Ответ:
V=A*t= 5*2*10^-6 = 1*10^-5 m³.
Now we need to find the volume V in cm³:
1 m³ = 1 000 000 cm³ so 10^-5 m³ = 10 cm³.
If 1 cm³ has a mass of 2.70 g then 10 cm³ has a mass of 27.0 grams.
So the correct answer is the mass of the aluminum sheet is m= 27 g or m=0.027 kg.
Ответ:
Explanation:
Centripetal acceleration is:
a = v² / r
a = (4.0 m/s)² / 0.60 m
a = 26.6 m/s²