Question

What is the ratio of the electrical force to the gravitational force between an electron and a positron?

Answer 1

Step-by-step explanation:

mass of electron = 1.9 ×
`10^(-31) kg`

mass of proton = 1.67 ×
`10^(-27)`
`kg`

Gravitational Force =
`F_(g)` =
`(Gm_(p)m_(e) )/(r^(2) )` =
`(6.67 * 9.1* 1.67*10^(-69) )/(r^(2) )`

Electrostatic Force =
`F_(E)` =
`(1)/(4\pi epsilon) (e^(2) )/(r^(2) )` =
`(9*10^(9)* 1.6*1.6* )/(r^(2) )`×
`10^(-38)`

`(F_(g) )/(F_(E) )` =
`4.47`×
`10^(-40)`