Question

Find the velocity of an object that has a mass of 500x10-6 kg and a charge of 1pc if it starts from

rest and passes through a potential difference of 120kV

Answer 1

v = 4.8 10⁻⁴ m / s

Step-by-step explanation:

To solve this exercise we can use the concepts of energy. In this case the potential energy is transformed into kinetic energy

U = K

q V = ½ m v²

v =
`\sqrt { (2qV)/(m) }`

in the exercise they indicate the value of the charge q₁ = 1 pC = 1 10⁻¹² C

let's calculate

v =
`\sqrt{ (2 \ 1 \ 10^(-12) 120 \ 10^3)/(500 ^(2) )`

v = 4.8 10⁻⁴ m / s