Electrostatic force between two objects

Click For Summary
SUMMARY

The discussion centers on calculating the electrostatic force between two charged objects, A and B, using Coulomb's Law. Object A has a charge of +1.18C and object B has a charge of -0.937C, separated by 2.46 cm. The goal is to determine how many electrons must be transferred from A to B to achieve an attractive force of 32.3 N. Participants noted that attempts to solve the problem resulted in imaginary numbers, indicating a miscalculation in applying Coulomb's Law.

PREREQUISITES
  • Coulomb's Law for electrostatic force calculations
  • Understanding of charge transfer and electron count
  • Basic algebra for solving quadratic equations
  • Concept of attractive vs. repulsive forces in electrostatics
NEXT STEPS
  • Review Coulomb's Law and its application in electrostatic force calculations
  • Learn about charge conservation and how to calculate electron transfer
  • Study methods for solving quadratic equations, particularly in physics contexts
  • Explore the implications of imaginary results in physical calculations
USEFUL FOR

Students in physics, educators teaching electrostatics, and anyone interested in understanding electrostatic forces and charge interactions.

chaslltt
Messages
15
Reaction score
0

Homework Statement


Two small objects, A and B, are fixed in place and separated by 2.46 cm in a vacuum. Object A has a charge of +1.18C, and object B has a charge of -0.937C. How many electrons must be removed from A and put onto B to make the electrostatic force that acts on each object an attractive force whose magnitude is 32.3 N?



Homework Equations


I using Coulombs law and I am plugging Qa+Q for Qa and Qb-Q for Qb. I end up getting a quadratic but only getting imaginary results


The Attempt at a Solution

 
Physics news on Phys.org


chaslltt said:
I using Coulombs law and I am plugging Qa+Q for Qa and Qb-Q for Qb. I end up getting a quadratic but only getting imaginary results
Show exactly what you did. (Careful with signs.)
 
hi chaslltt! :wink:

show us your full calculations, and then we'll see what went wrong, and we'll know how to help! :smile:
 

Similar threads

  • · Replies 10 ·
Replies
10
Views
2K
Replies
4
Views
2K
Replies
21
Views
2K
  • · Replies 14 ·
Replies
14
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 18 ·
Replies
18
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 18 ·
Replies
18
Views
5K
  • · Replies 5 ·
Replies
5
Views
1K