Why is it important to not delete posts after receiving help?

AI Thread Summary
Deleting posts after receiving help is against forum rules, as it disrupts the continuity of discussions and can hinder future users seeking similar assistance. The conversation highlights a specific physics problem involving the coordinates and force components between two charges, Q1 and Q2. Clarification on the sign of the force is essential for accurate problem-solving. Maintaining the integrity of the discussion is crucial for community support and knowledge sharing. Adhering to these guidelines ensures a valuable resource for all users.
duhduhduh
Messages
16
Reaction score
0
Solved.
 
Last edited:
Physics news on Phys.org
What are the coordinates of Q1 and Q2? Are you sure you have the correct sign for the x-component of the force?
 
Q1 is up and to the left of Q2. Oh, so force must be negative since it's Q2 acting on Q1?
 
duhduhduh said:
Oh, so force must be negative since it's Q2 acting on Q1?
Yep.
 
Thank you!
 
duhduhduh said:
Solved.

It is against the PF rules to deleted your posts after you have received help. Check your PMs.
 
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
Back
Top