Mathematics: Vis inversely proportional to r^2 when r=2, v=12. the value of r is approximately 2.83 when v= 4 8 6 2

Vis inversely proportional to r^2 when r=2, v=12. - id2212419516, laurenbreellamerritt

Ответ:

pookie879

11.03.2022

Mathematics

The correct answer option is 6.

Step-by-step explanation:

We know that is inversely proportional to r^2 so we can write it as:

∝ $\frac{1}{r^2}$

To change the proportionality to equality, we need to have a constant k.

$v = \frac{k}{r^2}$

When r=2 then v=12 so we can find the value of the constant :

$12=\frac{k}{2^2}$

k=48

Now that we know the value of , we can find the value of when r=2.83 :

$v=\frac{48}{2.83^2}$

v= 5.99 ≈

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Ответ:

jaciecaylen

25.10.2022

Mathematics

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Vis inversely proportional to r^2 when r=2, v=12. the value of r is approximately 2.83 when v= 4 8 6 2

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