Coulomb's Law problem: Force of attraction between the two singly charged ions

Click For Summary
The discussion revolves around calculating the force of attraction between singly charged sodium and chloride ions in a salt crystal, with a specified distance of 2.82×10^−10m. Participants express concerns about the reliability of various online answers to this problem. There is a request for others to verify the calculations to ensure accuracy. The conversation highlights the challenges of finding consistent information on the internet regarding physics problems. Ultimately, the importance of verifying mathematical solutions in scientific discussions is emphasized.
Special One
Messages
32
Reaction score
1
Homework Statement
Force
Relevant Equations
Coulomb's Law
In a salt crystal, the distance between adjacent sodium and chloride ions is 2.82×10^−10m. What is the force of attraction between the two singly charged ions?

Screenshot 2020-04-03 at 12.21.56.png
 
Last edited by a moderator:
Physics news on Phys.org
Do you want us to check your math ?
 
BvU said:
Do you want us to check your math ?
Lol, of course I just want you to check if I made any mistakes. I have found different answers on the internet of the same problem.
 
So, you can do the checking yourself. You have all you need to do it. The internet is notoriously unreliable. Note that PF is also on the internet :biggrin:
 
  • Haha
Likes berkeman and Orodruin

Thread 'Coulomb's force vs the Lorentz force'

Beams of electrons and protons move parallel to each other in the same direction. They ______. a. attract each other. b. repel each other. c. neither attract nor repel. d. the force of attraction or repulsion depends upon the speed of the beams. This is a previous-year-question of CBSE Board 2023. The answer key marks (b) as the right option. I want to know why we are ignoring Coulomb's force?
View full post »
Thread 'Struggling to make relation between elastic force and height'

Thread 'Struggling to make relation between elastic force and height'

Hello guys this is what I tried so far. I used the UTS to calculate the force it needs when the rope tears. My idea was to make a relationship/ function that would give me the force depending on height. Yeah i couldnt find a way to solve it. I also thought about how I could use hooks law (how it was given to me in my script) with the thought of instead of having two part of a rope id have one singular rope from the middle to the top where I could find the difference in height. But the...
View full post »

Thread 'Speed of moth related to Doppler Effect'

I treat this question as two cases of Doppler effect. (1) When the sound wave travels from bat to moth Speed of sound = 222 x 1.5 = 333 m/s Frequency received by moth: $$f_1=\frac{333+v}{333}\times 222$$ (2) When the sound wave is reflected from moth back to bat Frequency received by bat (moth as source and bat as observer): $$f_2=\frac{333}{333-v}\times f_1$$ $$230.3=\frac{333}{333-v}\times \frac{333+v}{333}\times 222$$ Solving this equation, I get ##v=6.1## m/s but the answer key is...
View full post »

Similar threads

Find the magnitude of the electric force from 3 charges at vertices of a cube
Replies
17
Views
2K
How can voltage between unlike charges decrease with proximity?
Replies
4
Views
822
Point charge with very thin metal sheet along a spherical surface
Replies
21
Views
2K
Force between poles of two magnets
Replies
1
Views
1K
What is the attractive electric force between the ions?
Replies
10
Views
13K
Coulomb's law to find electric field for charge density function
Replies
11
Views
1K
What is the net force on the -1nC charge in this Coulomb's Law problem?
Replies
1
Views
2K
Force between point charges at the center of two spherical shells
Replies
4
Views
2K
Coulomb's Law and the Force Between Charged Bodies Across Vast Distances
Replies
4
Views
1K
Coulomb's Law and Metallic Sheets: Impact on Force Between Charges
Replies
4
Views
1K