Force of attraction between proton and electron

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SUMMARY

The force of attraction between a proton and an electron in a hydrogen atom can be calculated using Coulomb's law, represented by the equation F = kQ1Q2/r². In this case, the charge of both the proton and electron is 1.60 x 10^-19 C, and the distance (r) between them is 5.00 x 10^-11 m. The constant k, known as Coulomb's constant, is essential for completing the calculation. The discussion clarifies that while the proton has a positive charge and the electron has a negative charge, their magnitudes are equal, leading to an attractive force.

PREREQUISITES
  • Understanding of Coulomb's law
  • Knowledge of elementary charge (1.60 x 10^-19 C)
  • Familiarity with the concept of electric charge
  • Basic algebra for solving equations
NEXT STEPS
  • Research the value of Coulomb's constant (k) and its significance in electrostatics
  • Learn how to calculate electric force using different charge configurations
  • Explore the concept of electric fields and their relation to forces between charges
  • Study the principles of atomic structure, focusing on protons and electrons
USEFUL FOR

Students studying physics, particularly those focusing on electromagnetism and atomic structure, as well as educators looking for clear explanations of fundamental concepts in electricity.

GRAvit__
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Homework Statement



What is the force of attraction between a proton and an electron in a hydrogen atom, if they are 5.00 x 10^-11m apart?

Homework Equations


F=kQ1Q2/r^2


The Attempt at a Solution


I really don't know where to go from here since i don't know the charge of the proton or electron. I just started the unit on electricity and am having a hard time with the first exercise sheet

Thanks for any help you can give me
 
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you need to refer to you data book to get the charge on an electron and a proton.
Your equation is correct
 
Ok i went through it again so is the elementary charge be considered the proton charge = 1.60 x 10^-19 and electrical charge would be 1 C = 6.24 x 10^18?
 
You have it...the charges are equal and are 1.6 x 10^-19C
The separation (r) = 5 x 10^-11m
You need the constant,k, then you can complete the calculation.
 
Ok i finally got thanks

Just one thing is confusing me and that is how the proton and the electron have the same electrical charge? I was under the impression they were different or atleast the electron had a (-) ?
 
GRAvit__ said:
Ok i finally got thanks

Just one thing is confusing me and that is how the proton and the electron have the same electrical charge? I was under the impression they were different or atleast the electron had a (-) ?

Charge is same. For convention we put a negative.
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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