Force of attraction between proton and electron

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Homework Help Overview

The discussion revolves around calculating the force of attraction between a proton and an electron in a hydrogen atom, specifically when they are 5.00 x 10^-11 m apart. The subject area includes concepts from electricity and electrostatics.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts to apply Coulomb's law but expresses uncertainty about the charge values of the proton and electron. Some participants suggest referring to a data book for the necessary charge values. Others confirm the charges and provide additional context about the constant needed for the calculation.

Discussion Status

The discussion is active, with participants providing guidance on the charges of the proton and electron and clarifying the concept of electrical charge. There is an ongoing exploration of the relationship between the charges, particularly regarding their signs and magnitudes.

Contextual Notes

Participants are navigating initial confusion regarding the signs of charges and the concept of elementary charge, as well as the constants involved in the calculation.

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.
 

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