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

A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 N.

What is the magnitude of the second charge?

2. Relevant equations

F = k(q1)(q2)/r^2

3. The attempt at a solution

F = k(q1)(q2)/r^2 need to solve for q2 so...

F(r^2)/k(q1) = q2

1N(225m)/(9x10^9)(1C) = 25nC

That is correct, right? I just wasn't sure because this is on my sample exam, but we never used nano numbers during class so I wanted to double check.

**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 Force charge magnitude

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