Electric Potential and Kinetic Energy

Click For Summary
SUMMARY

The discussion focuses on calculating the final velocity of two identical point charges, each with a charge of +9.5e-6C and a mass of 1.0mg, when released from rest at a distance of 3.5 cm apart. The key equation used is the conservation of energy principle, specifically Δ(KE) + Δ(PE) = 0, where Δ represents the change in kinetic and potential energy. Participants emphasize the importance of considering both charges in the calculation to accurately determine their final speeds when they are far apart.

PREREQUISITES
  • Understanding of electric potential energy and kinetic energy concepts
  • Familiarity with the conservation of energy principle
  • Basic knowledge of point charge interactions
  • Ability to perform calculations involving Coulomb's law
NEXT STEPS
  • Study the derivation of the conservation of energy in electrostatics
  • Learn about Coulomb's law and its applications in electric fields
  • Explore the concept of electric potential and its relation to kinetic energy
  • Investigate the effects of multiple point charges on motion and energy
USEFUL FOR

Students in physics, particularly those studying electromagnetism, as well as educators and anyone interested in understanding the dynamics of charged particles in electric fields.

jakey
Messages
51
Reaction score
0

Homework Statement



Two identical +9.5e-6C point charges are initially 3.5 cm from each other. If they are released at the same instant from rest, how fast will each be moving when they are very far from each other? Assume they have identical masses of 1.0mg.

Homework Equations



im not sure with this though but i used D(KE) + D(PE) = 0 where D=delta


The Attempt at a Solution


i used the above equation to solve for v. i kinda considered the problem by taking 1 point charge. however, i can't get the right answer...
 
Physics news on Phys.org
jakey said:
i kinda considered the problem by taking 1 point charge.
What do you mean by that?

There are two point charges. Make sure you consider the total change in KE of both of them.
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 7 ·
Replies
7
Views
1K
Replies
5
Views
2K
Replies
2
Views
1K
  • · Replies 21 ·
Replies
21
Views
6K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 23 ·
Replies
23
Views
2K
  • · Replies 22 ·
Replies
22
Views
4K
Replies
5
Views
1K
Replies
2
Views
3K