The electrostatic potential energy of two spheres

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Homework Help Overview

The discussion revolves around the electrostatic potential energy of two charged spheres, specifically examining the effects of varying charge values on the potential energy calculation.

Discussion Character

  • Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants explore the implications of substituting specific charge values into the potential energy formula. Questions arise regarding the overall factors resulting from these substitutions.

Discussion Status

Some participants have provided affirmations regarding the calculations, while others suggest comparing initial and final potential energies to analyze changes. Multiple interpretations of the energy changes are being explored.

Contextual Notes

There is a focus on the relationship between charge values and potential energy, with some participants questioning the assumptions made in the calculations. The nature of the problem suggests a need for careful consideration of the variables involved.

Fatima Hasan
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Homework Statement


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Homework Equations


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The Attempt at a Solution


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Is my answer correct ?
 

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Yes.
 
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If you substitute ##Q_1 = 4Q## and ##Q_2 = 4Q## into ##\frac{k Q_1 Q_2}{L}##, do you get an overall factor of 4 in the answer?
 
TSny said:
If you substitute ##Q_1 = 4Q## and ##Q_2 = 4Q## into ##\frac{k Q_1 Q_2}{L}##, do you get an overall factor of 4 in the answer?
##\frac{16 k Q}{L}## .
 
Fatima Hasan said:
##\frac{16 k Q}{L}## .
Yes, if you put a square on the Q.
 
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If you like puzzles, compare the initial potential energy of the two spheres with the final potential energy of the two spheres. Did the energy increase, decrease, or stay the same?
 

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