Question

Two balloons are charged with an identical quantity and type of charge: -6.25 nanoCoulombs (10-9). They are held apart at a separation distance of 61.7 cm (make sure to use METERS!). Determine the magnitude of the electrical force of repulsion between them.

Answer 1

force between both the balloons is
`9.23* 10^(-7)N`

Step-by-step explanation:

It is given charge on both balloons are same and equal to
`q=-6.25* 10^(-9)C`

Separation between both the balloons
`r=61.7cm=0.617m`

According to Coulomb's law force between two charges is given by

`F=(1)/(4\pi \epsilon _0)(q^2)/(r^2)=(Kq^2)/(r^2)`

Therefore force is equal to

`F=(9* 10^9* (-6.25* 10^(-9))^2)/(0.617^2)`

`F=9.23* 10^(-7)N`

So force between both the balloons is
`9.23* 10^(-7)N`