2023-02-22

If the distance between two charges is doubled, what will happen the force between the charges?

ri2n1tv9pt

The right decision is B 0.248
We have operation is $\frac{1}{5}+\frac{1}{25}+\frac{1}{125}$
Using the denominators as factors,
$\frac{1}{5}+\frac{1}{25}+\frac{1}{125}=\frac{1}{5}+\frac{1}{{5}^{2}}+\frac{1}{{5}^{3}}$
To change a fraction into decimal form, make the denominator in terms of multiples of 10.
$⇒\left(\frac{1}{5}×\frac{2}{2}\right)+\left(\frac{1}{{5}^{2}}×\frac{{2}^{2}}{{2}^{2}}\right)+\left(\frac{1}{{5}^{3}}×\frac{{2}^{3}}{{2}^{3}}\right)$
$=\frac{2}{10}+\frac{4}{100}+\frac{8}{1000}$
= 0.248

Do you have a similar question?