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Alex
3 years ago
15

If the distance between a neutral atom and a point charge is quadrupled, by what factor does the force on the atom by the point

charge change?
Physics
1 answer:
IgorLugansk [536]3 years ago
8 0
New force or Old Force 
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cylindrical container is to be constructed to be open at the top with a volume of 27π cubic meters using the least amount of mat
Llana [10]

Answer:

radius comes out to be 3 m

height of the cylinder comes out to be 3m

Explanation:

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volume of cylinder = 27π m³

π r² h = 27π

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surface area of cylinder open at the top

S = 2πrh + π r²

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\frac{\mathrm{d} s}{\mathrm{d} r}=\frac{\mathrm{d}}{\mathrm{d} r} (2\pi \dfrac{27}{r} + \pi r^2)

\frac{\mathrm{d} s}{\mathrm{d} r}=54\pi \dfrac{-1}{r^2}+2\pi r

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hence radius comes out to be 3 m

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