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3 years ago

6

If a sphere with radius r is inscribed in a cube with edges of length e, which of the following expresses the relationship betwe

en r and e ?
A. r=12er=12e
B. r = e
C. r = 2e
D. r=eâr=e
E. r=14e2

1 answer:

gavmur [86]3 years ago

6 0

Answer:

r= $\frac{1}{2}e$

Explanation:

when a sphere is inscribed in a cube , a side of the cube equals the diameter of the sphere, hence;

d = e

but d = 2r

2r =e

r= $\frac{1}{2}e$

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Answer:

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Solution

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3 years ago

Using 0.500 g of nichrome, you are asked to fabricate a wire with uniform cross-section. The resistance of the wire is 0.673 Ω.

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Explanation:

Given that,

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Volume,

$V=A\times l\\\\A=\dfrac{V}{l}\\\\Since, V=\dfrac{m}{d}\\\\V=\dfrac{m}{d}\\\\V=\dfrac{0.5\times 10^{-3}}{8.31\times 10^3}\\\\V=6.01\times 10^{-8}\ m^3$

Area,

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(b) Equation (1) becomes :

$A=\dfrac{6.01\times 10^{-8}}{l}\\\\A=\dfrac{6.01\times 10^{-8}}{0.201}\\\\\pi r^2=3\times 10^{-7}\\\\r=\sqrt{\dfrac{3\times 10^{-7}}{\pi}} \\\\r=3.09\times 10^{-4}\ m$

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Answer:

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(b)parallel

Explanation:

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2 years ago

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