Homework Help: Physics 2 electric fields

1. Sep 9, 2010

somebodyelse5

1. The problem statement, all variables and given/known data

An electron is released from rest in a weak electric field given by vector E = -2.40 10-10 N/C jhatbold. After the electron has traveled a vertical distance of 1.8 µm, what is its speed? (Do not neglect the gravitational force on the electron.)

Dont even know where to begin.

2. Sep 9, 2010

zhermes

Steps to consider:
whats the force on the electron due to the E field?
what about due to gravity?
Whats the net force?
How can you use that information?

3. Sep 22, 2010

somebodyelse5

do you know of any good online physics resources for electro fields? I am having some trouble understanding everything the professor is teaching, and i know this stuff should be much easier than i am making it!

4. Sep 22, 2010

glennpagano

I would find the acceleration of the electron. Then look at your kinematic equations

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook