(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An electron is released from rest from the negative plate of a parallel-plate apparatus, what is the electrons speed one third of the way between the plates. It also asks for the speed at which electron will hit the positive plate if a 450 V potential difference is applied.

3. The attempt at a solution

a)

Eel = V x q

Eel = ( 450 V ) x (1.6 x 10^-19C)

Eel = 7.2 x 10^17 J

Eel = 1/2mv^2

V = √((2 x (7.2 x 10^17 J))/9.1 x 10^31Kg)

V = 1.26 x10^7 m/s

b) i don't know how to do this?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Electric energy and speed

**Physics Forums | Science Articles, Homework Help, Discussion**