You are Here: Home >< A-levels

1. can someone plz help me on this question.

what is the order of the magnitude of the force of attraction between a proton and an electron separated by a distance of 10^-10m
2. Sorry you've not had any responses about this. Are you sure you've posted in the right place? Here's a link to our subject forum which should help get you more responses if you post there.

Just quoting in Danny Dorito so she can move the thread if needed
Spoiler:
Show
(Original post by Danny Dorito)
x
3. I'm not sure what is meant by "order of the magnitude of the force" but the magnitude of the electrostatic force between two bodies is found using Coulombs Law:

Where:
F = electrostatic force between two bodies in Newtons/N
k = Coulombs constant (Use the k value if you're given it)
is the charge size of one particle
is the charge size of the second particle
r = the distance apart in metres/m

The charge of a proton is +1e and the charge of an electron is -1e

So effectively they are equal sized charges so and are equal therefore

I'm sorry if this didn't answer your question (because of the wording of the question slightly confused me)
order of magnitude means what power of 10 it is
e.g. 3.0x10^8 has order of magnitude 8

My physics teacher is a recent graduate and jeez does he say this term a LOT.

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: October 29, 2016
The home of Results and Clearing

3,037

people online now

1,567,000

students helped last year
Today on TSR

University open days

1. Sheffield Hallam University
Tue, 21 Aug '18
2. Bournemouth University
Wed, 22 Aug '18
3. University of Buckingham
Thu, 23 Aug '18
Poll

All the essentials

Student life: what to expect

What it's really like going to uni

Essay expert

Learn to write like a pro with our ultimate essay guide.

Create a study plan

Get your head around what you need to do and when with the study planner tool.

Resources by subject

Everything from mind maps to class notes.

Study tips from A* students

Students who got top grades in their A-levels share their secrets